Question

Cálculo esta integral ...

$\int\limits {e^{- \frac{y}{2} }} \, dy$

Answer 1

$\int\limits{e^{- \frac{y}{2} }} \, dx$

Mudança de variável

$u= -\frac{y}{2}$

$du=- \frac{1}{2}dy$

$dy=-2du$

$\int{e^{u}}(-2)\, du=-2\int{e^{u}}\, du=-2e^{u}=-2e^{ -\frac{y}{2} }+c$



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