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2 years ago

U - 4u + 4 = 7 what is U

2 answers:

8 0

Try to get the u’s on one side so for this to happen, you would subtract the four from both sides.
u - 4u = 7 - 4

combine like terms

-3u = 3

divide by -3

u = -1

BartSMP [9]2 years ago

6 0

Answer:

U = -1

Step-by-step explanation:

Combine U with -4U and you get -3.

-3u + 4 = 7

Subtract 4 from 7, you get 3.

Divide 3 by -3, you get -1.

U = -1

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2 years ago

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2 years ago

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Step-by-step explanation:

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3 years ago

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2 years ago

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AVprozaik [17]

Answer:

a) So, this integral is convergent.

b) So, this integral is divergent.

c) So, this integral is divergent.

Step-by-step explanation:

We calculate the next integrals:

$\int_1^{\infty} e^{-2x} dx=\left[-\frac{e^{-2x}}{2}\right]_1^{\infty}\\\\\int_1^{\infty} e^{-2x} dx=-\frac{e^{-\infty}}{2}+\frac{e^{-2}}{2}\\\\\int_1^{\infty} e^{-2x} dx=\frac{e^{-2}}{2}\\$

So, this integral is convergent.

$\int_1^{2}\frac{dz}{(z-1)^2}=\left[-\frac{1}{z-1}\right]_1^2\\\\\int_1^{2}\frac{dz}{(z-1)^2}=-\frac{1}{1-1}+\frac{1}{2-1}\\\\\int_1^{2}\frac{dz}{(z-1)^2}=-\infty\\$

So, this integral is divergent.

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So, this integral is divergent.

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3 years ago