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3 years ago

14

Find the inverse of each function f(x)=4x^2-12

1 answer:

s344n2d4d5 [400]3 years ago

8 0

See photo for the answers and solutions.

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A function is defined by the equation y=x2+3, where x represents the input of the function and y represents the output. Which of

Gnoma [55]

Answer:

it y = 2x + b

Step-by-step explanation:

YOU NEED TO PUT THE M FIRST NOT THE X

4 0

3 years ago

Verify by substitution whetherthe given functions are solutions of the given DE. Primes denote derivatives with respect to x.y!!

julia-pushkina [17]

Complete Question

The complete question is shown on the first uploaded

Answer:

$y_1$ is not a solution of the differential equation

$y_2$ is not a solution of the differential equation

$y_3$ is not a solution of the differential equation

Step-by-step explanation:

The differential equation given is $y'' + y' = cos2x$

Let consider the first equation to substitute

$y_1 = cosx +sinx$

$y_1' = -sinx +cosx$

$y_1'' = -cosx -sinx$

So

$y_1'' - y_1' = -cosx -sinx -sinx +cosx$

$y_1'' + y_1' = -2sinx$

So

$-2sinx \ne cos2x$

This means that $y_1$ is not a solution of the differential equation

Let consider the second equation to substitute

$y_2 = cos2x$

$y_2' = -2sin2x$

$y_2'' = -4cos2x$

So

$y_2'' + y_2' = -4cos2x-2sin2x$

So

$-4cos2x-2sin2x \ne cos2x$

This means that $y_2$ is not a solution of the differential equation

Let consider the third equation to substitute

$y_3 = sin 2x$

$y_3' = 2cos 2x$

$y_3'' = -4sin2x$

So

$y_3'' + y_3' = -4sin2x - 2cos2x$

So

$-4sin2x - 2cos2x \ne cos2x$

This means that $y_3$ is not a solution of the differential equation

6 0

3 years ago

Can someone help? (On any of them)

Jet001 [13]

Hope it helps
6) (b+4)(b+4)
8) (y-3)(y+2)
10) (y-3)(y-5)
12) (b+4)(b+5)
14) (a-3)(a-12)

8 0

3 years ago

As shown in the illustration, Alexa had a negative balance in her checking account before depositing a $47.00 check. What is the

Ronch [10]

I can't see the negative balance that is mentioned.
But for example it it was a -$22.00 then you would just subtract the $22.00 from $47.00.

$47.00
-$22.00
-------------
$25.00

3 0

3 years ago

Can someone explain this to me

Hatshy [7]

6+7+3 =16
7+9+7 =23
9+6+7=22
6+8+1=15

6 0

3 years ago