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What is the period of (f(x)=\cos 4x)?फलन (f(x)=\cos 4x) का आवर्त क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ( \frac{\pi}{2} )( \frac{\pi}{2} )
The period of (\cos ax) is ( \frac{2\pi}{|a|} ). Hence the period of (\cos 4x) is ( \frac{\pi}{2} ).(\cos ax) का आवर्त ( \frac{2\pi}{|a|} ) होता है। इसलिए (\cos 4x) का आवर्त ( \frac{\pi}{2} ) है।
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