How To Find The Directional Derivative and The Gradient Vector

2024/05/2313:18:04 hotcomm 611184

How To Find The Directional Derivative and The Gradient Vector - DayDayNews

How To Find The Directional Derivative and The Gradient Vector - DayDayNews

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Today in the Tokyo Olympics table tennis men's singles semi-finals, Taiwanese table tennis player Lin Yunru faced off against China's number one men's table tennis player Fan Zhendong. After a fierce battle between the two for 7 rounds and 85 minutes, Lin Yunru won 3:4. Unfortuna - DayDayNews

Today in the Tokyo Olympics table tennis men's singles semi-finals, Taiwanese table tennis player Lin Yunru faced off against China's number one men's table tennis player Fan Zhendong. After a fierce battle between the two for 7 rounds and 85 minutes, Lin Yunru won 3:4. Unfortuna

A rising star in the table tennis world - 19-year-old Taiwanese young player Lin Yunru

06/20 1644

In the past few days, Russia and Ukraine did not sit down and negotiate calmly over the Kerch conflict. Instead, they stepped up their military preparations and entered into a warlike posture. Just recently, Russia sent 80,000 soldiers, 1,400 artillery pieces, 900 tanks, 2,300 ar - DayDayNews

In the past few days, Russia and Ukraine did not sit down and negotiate calmly over the Kerch conflict. Instead, they stepped up their military preparations and entered into a warlike posture. Just recently, Russia sent 80,000 soldiers, 1,400 artillery pieces, 900 tanks, 2,300 ar

Ukraine is in trouble! Putin was completely infuriated: he dispatched 80,000 troops to attack Ukraine’s doorstep!

06/20 1189

Counting today, the war between Russia and Ukraine on the Eastern European continent has lasted for 59 days. At the same time, the South Korean Ministry of Foreign Affairs received bad news about the Russian-Ukrainian battlefield. - DayDayNews

Counting today, the war between Russia and Ukraine on the Eastern European continent has lasted for 59 days. At the same time, the South Korean Ministry of Foreign Affairs received bad news about the Russian-Ukrainian battlefield.

On the 59th day of the Russo-Ukrainian war, Korean citizens who went to Ukraine to participate in the war may die; Egyptian people asked to help Russia fight

06/20 1287

On June 23, CNN published an article introducing the fighting situation between Russia and Ukraine in the Luhansk region, and stated that the current situation is very unfavorable to the Ukrainian side. - DayDayNews

On June 23, CNN published an article introducing the fighting situation between Russia and Ukraine in the Luhansk region, and stated that the current situation is very unfavorable to the Ukrainian side.

CNN issued an article introducing the war situation between Russia and Ukraine in the Luhansk region, saying that the current situation is very unfavorable to Ukraine.

06/20 1202

Taiwanese table tennis prodigy Lin Yunru defeated Ma Long in the T2 League, causing the biggest upset in the tournament. What was even more surprising was that he defeated Fan Zhendong with an absolute advantage of 4-1 in the final to win the championship. - DayDayNews

Taiwanese table tennis prodigy Lin Yunru defeated Ma Long in the T2 League, causing the biggest upset in the tournament. What was even more surprising was that he defeated Fan Zhendong with an absolute advantage of 4-1 in the final to win the championship.

18-year-old Lin Yunru wins all the masters but never shouts! My father’s teachings: Don’t be too arrogant in life

06/20 1118

The semi-finals of the Tokyo Olympics table tennis team competition were all announced on the afternoon of the 3rd. The Chinese women's team eliminated the Singapore team 3:0. The Chinese Taipei men's team still lost to the German "old team" after 5 games and failed to achieve "O - DayDayNews

The semi-finals of the Tokyo Olympics table tennis team competition were all announced on the afternoon of the 3rd. The Chinese women's team eliminated the Singapore team 3:0. The Chinese Taipei men's team still lost to the German "old team" after 5 games and failed to achieve "O

No new team is included in the semi-finals of Olympic table tennis "team battle"

06/20 1665

Picture | Internet source: Zhongquwuwen (ID: zhongquwuwen) On September 16, Jay Chou's new song "Say Good or Not Cry" was finally released. I clicked in at 23 o'clock on time, but it couldn't be opened. QQ Music crashed. 19 years after his debut, he released a single and it is st - DayDayNews

Picture | Internet source: Zhongquwuwen (ID: zhongquwuwen) On September 16, Jay Chou's new song "Say Good or Not Cry" was finally released. I clicked in at 23 o'clock on time, but it couldn't be opened. QQ Music crashed. 19 years after his debut, he released a single and it is st

Jay Chou's "Say Good Not to Cry": Once the tears are shed, youth is over

06/20 1894

And this is the professional term used by Huahua, a star promoter, when commenting on Zhong Yixuan's creation during the battle for the nine major idol labels in "Tomorrow's Son". It is a professional terminology. Creators who have studied professional music theory or have certai - DayDayNews

And this is the professional term used by Huahua, a star promoter, when commenting on Zhong Yixuan's creation during the battle for the nine major idol labels in "Tomorrow's Son". It is a professional terminology. Creators who have studied professional music theory or have certai

What the hell is 4536251 Huahua talking about? In fact, this is the password for songwriting!

06/20 1571

To welcome the arrival of 2022, Korean drama heroes and goddesses have returned one after another. Everyone can see Song Joong-ki, Son Ye-jin, Park Seo-joon, Han So-hee, Park Min-young, Kim Woo-bin, Nam Joo-hyuk... - DayDayNews

To welcome the arrival of 2022, Korean drama heroes and goddesses have returned one after another. Everyone can see Song Joong-ki, Son Ye-jin, Park Seo-joon, Han So-hee, Park Min-young, Kim Woo-bin, Nam Joo-hyuk...

Recommended Korean dramas to watch online in 2022! Must-see costume dramas, suspenseful mysteries, and sweet romance

06/20 1666

The 24-year-old Kravitz is a well-known left back in Ukraine and has been selected for the national team many times. However, due to the competition with him for the same position is Manchester City's Zinchenko, he has not yet represented the national team. - DayDayNews

The 24-year-old Kravitz is a well-known left back in Ukraine and has been selected for the national team many times. However, due to the competition with him for the same position is Manchester City's Zinchenko, he has not yet represented the national team.

A Ukrainian tough guy from Segunda División publicly accused Putin and wanted to abandon the team and join the army and return home to join the war.

06/20 1767

Today’s latest oil price adjustment information: Today, June 10, Friday, the 11th oil price adjustment of this year will be carried out next week. In the first 10 adjustments, there were 9 increases and only 1 decrease. With the recent The continuous surge in international oil pr - DayDayNews

Today’s latest oil price adjustment information: Today, June 10, Friday, the 11th oil price adjustment of this year will be carried out next week. In the first 10 adjustments, there were 9 increases and only 1 decrease. With the recent The continuous surge in international oil pr

It’s going up! It’s going up! It’s going up! This year [the 10th oil price increase], oil prices have been rising for “six months in a row”, please come on in advance!

06/20 1571

First, let’s pay attention to the trend chart of crude oil prices in 2008. This is the trend of crude oil prices in 2008. It bottomed out, rebounded, and continued to fall after rebounding. The lowest point in 2008 was US$32. After a double bottom was formed, the real trend began - DayDayNews

First, let’s pay attention to the trend chart of crude oil prices in 2008. This is the trend of crude oil prices in 2008. It bottomed out, rebounded, and continued to fall after rebounding. The lowest point in 2008 was US$32. After a double bottom was formed, the real trend began

Once in eight years, the price of crude oil turns to water, and the events of 2008 happen again.

06/20 1049

According to a notice from the National Development and Reform Commission, starting from 24:00 on June 28, gasoline prices will be reduced by 320 yuan per ton, and diesel prices will be reduced by 310 yuan per ton. This is the second reduction in domestic refined oil prices this - DayDayNews

According to a notice from the National Development and Reform Commission, starting from 24:00 on June 28, gasoline prices will be reduced by 320 yuan per ton, and diesel prices will be reduced by 310 yuan per ton. This is the second reduction in domestic refined oil prices this

Domestic oil prices drop for the second time this year, No. 95 gasoline bids farewell to the "10 yuan era"

06/20 1927

On July 5, international oil prices plunged sharply, hitting the lowest level in nearly three months. As of the close of the day, U.S. WTI August crude oil futures closed down $8.93 at $99.50 per barrel, a decrease of 8.24%; - DayDayNews

On July 5, international oil prices plunged sharply, hitting the lowest level in nearly three months. As of the close of the day, U.S. WTI August crude oil futures closed down $8.93 at $99.50 per barrel, a decrease of 8.24%;

Will oil prices drop in 5 days? Economic Daily: Don’t misunderstand oil price control policies

06/20 1709

Affected by the decline in international oil prices in the past few days, the current round of oil prices is currently showing a relatively sharp downward trend, and the official adjustment window will officially open on July 12. - DayDayNews

Affected by the decline in international oil prices in the past few days, the current round of oil prices is currently showing a relatively sharp downward trend, and the official adjustment window will officially open on July 12.

Don’t work hard on weekends! Domestic oil prices may experience "two consecutive falls" next Tuesday: the decline exceeds the 0.2 yuan/liter mark

06/20 1196

Today is the sixth working day of a new round of oil price adjustment. It is currently expected that the oil price will be lowered by 150 yuan/ton, which is equivalent to a decrease of 0.12 yuan/liter in liters. Compared with yesterday, the expected decrease will increase by 16 y - DayDayNews

Today is the sixth working day of a new round of oil price adjustment. It is currently expected that the oil price will be lowered by 150 yuan/ton, which is equivalent to a decrease of 0.12 yuan/liter in liters. Compared with yesterday, the expected decrease will increase by 16 y

Oil price adjustment: Note that it is expected to be reduced by 150 yuan/ton, and has been increased 10 times. Oil prices are finally going to fall.

06/20 1376

Today’s latest oil price adjustment information: Today, June 10, Friday, the 11th oil price adjustment of this year will be carried out next week. In the first 10 adjustments, there were 9 increases and only 1 decrease. With the recent The continuous surge in international oil pr - DayDayNews

Today’s latest oil price adjustment information: Today, June 10, Friday, the 11th oil price adjustment of this year will be carried out next week. In the first 10 adjustments, there were 9 increases and only 1 decrease. With the recent The continuous surge in international oil pr

It’s going up! It’s going up! It’s going up! This year [the 10th oil price increase], oil prices have been rising for “six months in a row”, please come on in advance!

06/20 1571

First, let’s pay attention to the trend chart of crude oil prices in 2008. This is the trend of crude oil prices in 2008. It bottomed out, rebounded, and continued to fall after rebounding. The lowest point in 2008 was US$32. After a double bottom was formed, the real trend began - DayDayNews

First, let’s pay attention to the trend chart of crude oil prices in 2008. This is the trend of crude oil prices in 2008. It bottomed out, rebounded, and continued to fall after rebounding. The lowest point in 2008 was US$32. After a double bottom was formed, the real trend began

Once in eight years, the price of crude oil turns to water, and the events of 2008 happen again.

06/20 1049

Unlike us Chinese who would rather bear a loan for 20 to 30 years to buy a house, I found that many young people abroad are more inclined to rent. The case shared with you in this issue is the before and after renovation of a rental house. Before renovation Before renovation Befo - DayDayNews

Unlike us Chinese who would rather bear a loan for 20 to 30 years to buy a house, I found that many young people abroad are more inclined to rent. The case shared with you in this issue is the before and after renovation of a rental house. Before renovation Before renovation Befo

Let’s see how foreigners renovate rental houses! The finished effect is great, stylish, simple and individual.

06/20 1765

U.S. National Security Advisor Sullivan announced on Monday that the Iranian government is preparing to provide hundreds of drones to Russia in July, including weapons-equipped surveillance and combat drones. - DayDayNews

U.S. National Security Advisor Sullivan announced on Monday that the Iranian government is preparing to provide hundreds of drones to Russia in July, including weapons-equipped surveillance and combat drones.

Would you rather have products from Iran than from China? Is Iran’s hundreds of drones helping Russia just a matter of face?

06/20 1676

According to a notice from the National Development and Reform Commission, starting from 24:00 on June 28, gasoline prices will be reduced by 320 yuan per ton, and diesel prices will be reduced by 310 yuan per ton. This is the second reduction in domestic refined oil prices this - DayDayNews

According to a notice from the National Development and Reform Commission, starting from 24:00 on June 28, gasoline prices will be reduced by 320 yuan per ton, and diesel prices will be reduced by 310 yuan per ton. This is the second reduction in domestic refined oil prices this

Domestic oil prices drop for the second time this year, No. 95 gasoline bids farewell to the "10 yuan era"

06/20 1927

In the ongoing 2022 Rim-Pacific military exercise, four U.S. unmanned ships are deployed to experiment with a joint combat model with manned platforms, claiming to be a "catalyst for innovation" and enhance the U.S. military's combat advantages. Can the purpose of the US military - DayDayNews

In the ongoing 2022 Rim-Pacific military exercise, four U.S. unmanned ships are deployed to experiment with a joint combat model with manned platforms, claiming to be a "catalyst for innovation" and enhance the U.S. military's combat advantages. Can the purpose of the US military

Can the deployment of unmanned warships in the "Rim-Pacific" military exercise really "enhance the U.S. military's combat advantages"?

06/20 1866