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Nataly_w [17]
3 years ago
7

Find the gradient of the function at given point. f(x,y)=ln(x^2+y^2)

Mathematics
1 answer:
N76 [4]3 years ago
5 0
\nabla f(x,y)=\left\langle\dfrac{\partial f}{\partial x},\dfrac{\partial f}{\partial y}\right\rangle=\left\langle\dfrac{2x}{x^2+y^2},\dfrac{2y}{x^2+y^2}\right\rangle

You didn't provide the "given point", but I assume you're capable of plugging it in.
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A ladder is resting against a wall. The top of the ladder touches the wall at a height of 6
viktelen [127]

Answer:

10 feet

Step-by-step explanation:

let the ladder be x feet in length

Using the Pythagoras theorem,

6^2+(x-2)^2=x^2

if you solve this you'll get, x = 10

Answered by GAUTHMATH

3 0
3 years ago
Footlocker in the mall is having a 25% off sale on all tennis shoes. Joe paid $67.50 for his
marta [7]

Answer:

The original price of the shoes was $90.

Step-by-step explanation:

25% off means the price Joe paid for it is 75% of the original price.

Set up an equation:

75/100 = 67.50/x

Cross multiply

75 × x = 100 × 67.50

75x = 6750

x = 90

Check our work:

First solve for 25% off of 90 (our answer).

25% = 0.25

90 × 0.25 = 22.50

Next, subtract the discount from 90.

90 - 22.50 = 67.50

67.50 was what Joe paid so this is correct.

8 0
3 years ago
What is |-8|? I really need help ​
velikii [3]

Answer:

8 is the correct answer

8 0
2 years ago
Please help me with this question bellow.
Vera_Pavlovna [14]

Answer:

they are just multiplying thr numbers on top for exsample 42÷6=7

Step-by-step explanation:

you should see what numbers dose the bottom numbers have in common and multiply by 15.

3 0
3 years ago
stephanie invests $3,991 in a retirement account with a fixed annual interest rate of 6% compound continuously. What will the ac
wolverine [178]

Answer:

7103.98

Step-by-step explanation:

1) 3991 × 6% = 239.46 intrest rate of a year

2) 239.46 × 13 = 3112.98 intrest rate of 6% for 13yrs

3) 3991 + 3112.98 = 7103.98 Stephanie account balance after 13 yrs

3 0
3 years ago
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