Integration

\int_{0}^{\infty}{e^{-x^2}dx}=\sqrt{\frac{\pi }{2}}
then find value of \int_{0}^{\infty}{e^{-ax^2}dx},a>0

3 Answers

106
Asish Mahapatra ·

∩2a

1
champ ·

Please give the solution also :-(

106
Asish Mahapatra ·

Hint: use
if ∫f(x)=g(x)+c, then
∫f(ax+b) = 1ag(ax+b) +c

Solution:
ax2 can be written as (x√a)2
So the answer will be
1a∩2

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