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Damm [24]
3 years ago
10

How do you solve: f(x) = -x2e-x +2xe-x , finding the zero's of f.

Mathematics
1 answer:
Maksim231197 [3]3 years ago
7 0

Answer:

0 and 2

Step-by-step explanation:

f(x) = -x^2e^{-x}+2xe^{-x}

To find zeros set f(x)=0  and solve for x

0 = -x^2e^{-x}+2xe^{-x}

0 = -e^{-x}(x^2-2x)

now factor out x

0 = -xe^{-x}(x-2)

set each factor =0 and solve for x

x=0

-e^{-x}=0 no solution for x

x-2=0, x=2

zeros of f  are 0 and 2

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this past Sunday, the giants scored 9 less than twice the cowboys. the packers scored 14 points more than the giants. if the tea
Grace [21]
Let the score of cowboys is x
and giants make score 9 which is twice less than the cowboys score so
giants score will be = 2x -9
and packers scored 14 more than giants that is (2x - 9) + 14
now sum of their scores is equal to 81 it means:
x + (2x - 9) + (2x -9) + 14 = 81
x + 2x - 9 + 2x - 9 + 14 = 81
5x = 81 + 4
5x = 85
x = 17
packers scored =  (2x - 9) + 14
= 2 (17) -9 + 14
=38 + 5 = 43 points

5 0
3 years ago
Y varies inversely as x, and y = 6 when x =-4. What is x when y = -12?
Volgvan
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3 years ago
What is the volume of a cylinder with a base radius of 2 and height of 6 ?
vodomira [7]

Answer:

V = 24pi

or 75.36 ( using 3.14 for pi)

or 75.39822369 ( using the pi button)

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

We know the radius and the height

V = pi (2)^2 * 6

V = pi 4*6

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If we approximate pi by 3.14

V = 3.14 * 24 = 75.36

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8 0
3 years ago
Read 2 more answers
Can someone help me with this first one to answer gets brainllest and 20 points.
Afina-wow [57]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Find x if B is between A and C
taurus [48]

Answer:

Given - AB = X + 5

BC = 2(x - 3)

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SOLUTION -

B is the mid point of AC

AB = BC

x +5 = 2x - 6

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x = 11

Value of X = 11

7 0
3 years ago
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