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Shtirlitz [24]
2 years ago
12

I really need help please !!!

Mathematics
1 answer:
lisov135 [29]2 years ago
8 0

Answer:

15

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(5+x) * 5 = 10^2

Distribute

25 +5x = 100

Subtract 25 from each side

25-25 +5x = 100-25

5x= 75

Divide by 5

5x/5 = 75/5

x = 15

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1 year ago
Find the derivative of Y=2xcos2x​
Nastasia [14]

Answer:

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Step-by-step explanation:

For this problem, we will need to use the product rule since you have two terms that contain the variable x.

The product rule is simply as follows:

The derivative of the function is the product of the first term times the derivative of the second term plus the derivative of the first term times the second term.

Note the derivative of 2x with respect to x, is 2.

Note the derivative of cos(2x) with respect to x is (-1/2) sin(2x).

With this in mind, let's find the derivative of our function with respect to x.

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Y' = (2x * -1 / 2) sin(2x) + 2 * cos(2x)

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Cheers.

3 0
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Trava [24]

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3 years ago
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