Find the First Harmonic of the Function $h(x)=$ $\left\{\begin{array}{l}\pi \\0\end{array}\right.$ $\begin{aligned}-\pi &<\\0<\end{aligned}$

question 53

Multiple Choice

Find the first harmonic of the function $h(x) =$$\left\{\begin{array}{l}\pi \\0\end{array}\right.$$\begin{aligned}-\pi &<\\0<\end{aligned}$$\begin{array}{l}x \leq 0 \\x \leq \pi\end{array}$ .

• A) \(-\sin x\)
• B) \(\sin x\)
• C) \(-2 \sin x\)
• D) \(2 \sin x\)
• E)0

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