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3 years ago

What is the equivalent expression of y-0.32y

Mathematics

2 answers:

Mkey [24]3 years ago

6 0

Y - 0.32y = (1 - 0.32) y = 0.68y

Dahasolnce [82]3 years ago

5 0

Y - 0.32y = (1 - 0.32)y = 0.68y

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Use logarithmic differentiation to find the derivative of the function. y = x2cos x Part 1 of 4 Using properties of logarithms,

Arisa [49]

ANSWER

${y}^{'} = 2x \cos(x) - {x}^{2} \sin(x)$

EXPLANATION

The given function is

$y = {x}^{2} \cos(x)$

We take natural log of both sides;

$ln(y) = ln({x}^{2} \cos(x) )$

Recall and use the product rule of logarithms.

$ln(AB) = ln(A ) + ln(B)$

This implies that:

$ln(y) = ln({x}^{2} ) + ln( \cos(x) )$

$ln(y) = 2 ln({x} ) + ln( \cos(x) )$

We now differentiate implicitly to obtain;

$\frac{ {y}^{'} }{y} = \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) }$

Multiply through by y,

${y}^{'} = y( \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) ) })$

Substitute y=x²cosx to obtain;

${y}^{'} = {x}^{2} \cos(x) ( \frac{2}{x} - \frac{ \sin(x) }{ \cos(x) ) } )$

Expand:

${y}^{'} = 2x \cos(x) - {x}^{2} \sin(x)$

7 0

3 years ago

What is 9 - 4 1/12 ??? im so stupid smh

IrinaVladis [17]

Answer:

4 11/12

Step-by-step explanation:

Well 9 - 4 1/12 is 4 11/12

6 0

3 years ago

Thanks for the help pt.1

erma4kov [3.2K]

(jk)(x)= j (k(x)) = j(9-2x)

= -7(9-2x) = -63 + 14x

but i see there is no such option. may be second option is typo.

so you can select 2nd option

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Which shows a correct order to solve this story problem?

torisob [31]

you will have to do letter c witch was:

Step 1: Add the price of the tickets and the amount spent on food.
Step 2: Add the amount of the tax.
Step 3: Divide that total by 2.

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3 years ago

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Mariulka [41]

Answer:

-282y

Step-by-step explanation:

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3 years ago