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3 years ago

Can somebody please help me with this but not 13

Mathematics

2 answers:

natita [175]3 years ago

5 0

Could you make the picture clear and back it up a little then i will see it better

svetoff [14.1K]3 years ago

5 0

So far I have that 1 is false and it is not equal and then 3 is true and it is equal I hope it helps the other pictures are a bit too blurry

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PLS HELP ASAP ILL MARK BRAINLIEST

tensa zangetsu [6.8K]

Answer:

−

Step-by-step explanation:

copy and paste

8 0

3 years ago

Please help, Find the Quotient, simplify your answer, Show your work

sladkih [1.3K]

9a/5b is the answer, the (-7) cancel out.

5 0

3 years ago

Y=x.arctan(x)^1/2. find dy/dx. pls show steps

Whitepunk [10]

$y=x(\arctan x)^{1/2}$

Use the product rule first:

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dx}{\mathrm dx}(\arctan x)^{1/2}+x\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}$

$\dfrac{\mathrm dy}{\mathrm dx}=(\arctan x)^{1/2}+x\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}$

Use the chain rule to compute the derivative of $(\arctan x)^{1/2}$ . Let $z=(\arctan x)^{1/2}$ and take $u=\arctan x$ , so that by the chain rule

$\dfrac{\mathrm dz}{\mathrm dx}=\dfrac{\mathrm dz}{\mathrm du}\dfrac{\mathrm du}{\mathrm dx}$

$\dfrac{\mathrm dz}{\mathrm du}=\dfrac{\mathrm du^{1/2}}{\mathrm du}=\dfrac12u^{-1/2}$

$\dfrac{\mathrm du}{\mathrm dx}=\dfrac{\mathrm d\arctan x}{\mathrm dx}=\dfrac1{1+x^2}$

$\implies\dfrac{\mathrm d(\arctan x)^{1/2}}{\mathrm dx}=\dfrac1{2(\arctan x)^{1/2}(1+x^2)}$

So we have

$\dfrac{\mathrm dy}{\mathrm dx}=(\arctan x)^{1/2}+\dfrac x{2(\arctan x)^{1/2}(1+x^2)}$

You can rewrite this a bit by factoring $(\arctan x)^{-1/2}$ , just to make it look neater:

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac1{2(\arctan x)^{1/2}}\left(2\arctan x+\dfrac x{1+x^2}\right)$

3 0

3 years ago

The volume inside a rectangular storage room is 2061 feet The room is 9 feet high find the area of the floor

klemol [59]

Answer:

229 ft²

Step-by-step explanation:

Note that the volume is 2061 ft³, not 2061 ft.

area of floor = volume÷height = (2061 ft³)/(9 ft) = 229 ft²

6 0

3 years ago

Evaluate each expression if x = 3.

PIT_PIT [208]

Answer:

a) 2³ = 2×2×2×=8

b) 3²=3×3=9

c) 1³=1×1×1=1

d) 3¹=3

e) 1/2³=1/2×1/2×1/2=1/8

4 0

3 years ago