Basic Math Examples

$- \sin (- \frac{π i}{2})$

Step 1

Since $\sin (- \frac{π i}{2})$ is an odd function, rewrite $\sin (- \frac{π i}{2})$ as $- \sin (\frac{π i}{2})$ .

$- - \sin (\frac{π i}{2})$

Step 2

Multiply $- - \sin (\frac{π i}{2})$ .

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Step 2.1

Multiply $- 1$ by $- 1$ .

$1 \sin (\frac{π i}{2})$

Step 2.2

Multiply $\sin (\frac{π i}{2})$ by $1$ .

$\sin (\frac{π i}{2})$