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o-na [289]
4 years ago
12

Please help me it would help

Mathematics
2 answers:
gavmur [86]4 years ago
8 0

the answer is A i think I am not sure to be honest

ivolga24 [154]4 years ago
6 0

the answer is A=21.2

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What is the product of 84,90?
MAVERICK [17]
84•90 is 7,560.

ndheisn
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4 years ago
Consider the function f given by f(x)=x*(e^(-x^2)) for all real numbers x.
NISA [10]

Answer:

\frac{\sqrt{\pi}}{4}

Step-by-step explanation:

You are going to integrate the following function:

g(x)=x*f(x)=x*xe^{-x^2}=x^2e^{-x^2}  (1)

furthermore, you know that:

\int_0^{\infty}e^{-x^2}=\frac{\sqrt{\pi}}{2}

lets call to this integral, the integral Io.

for a general form of I you have In:

I_n=\int_0^{\infty}x^ne^{-ax^2}dx

furthermore you use the fact that:

I_n=-\frac{\partial I_{n-2}}{\partial a}

by using this last expression in an iterative way you obtain the following:

\int_0^{\infty}x^{2s}e^{-ax^2}dx=\frac{(2s-1)!!}{2^{s+1}a^s}\sqrt{\frac{\pi}{a}} (2)

with n=2s a even number

for s=1 you have n=2, that is, the function g(x). By using the equation (2) (with a = 1) you finally obtain:

\int_0^{\infty}x^2e^{-x^2}dx=\frac{(2(1)-1)!}{2^{1+1}(1^1)}\sqrt{\pi}=\frac{\sqrt{\pi}}{4}

5 0
3 years ago
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The equation for picture D is 13 4/5 = w + 3 4/5. What is the solution? Write the number answer only. Please do not write the va
aksik [14]

Answer:

13 4/5 = 10 + 3 4/5

Step-by-step explanation:

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If line A contains Q(5,1) and is parallel to line MN with M(-2,4) and N(2,1),which ordered pair would be on the perpendicular tr
pashok25 [27]

Answer:

can u explain more?

Step-by-step explanation:

5 0
3 years ago
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