∫π2−π2 ∫ − π 2 π 2 cosx dx

Question 1 Report

$\int_{- \frac{π}{2}}^{\frac{π}{2}}$ cosx dx

Answer Details

$\int_{- \frac{π}{2}}^{\frac{π}{2}}$ cosx
$[s i n x]_{\frac{π}{2}}^{\frac{π}{2}}$
= sin $\frac{π}{2}$ - (-sin $\frac{π}{2}$ )
= sin $\frac{π}{2}$ + sin $\frac{π}{2}$
= 2 sin $\frac{π}{2}$
= 2 sin 1.5714
= 2(0.2704)
= 0.5
= 1

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Integration

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