plz solve this proper explanation...

Asked by surabhilakhara7299 | 30th Jan, 2022, 02:16: PM

Expert Answer:

begin mathsize 14px style fraction numerator d over denominator d x end fraction open parentheses 4 space sin x space cos x close parentheses space equals space 4 space open curly brackets fraction numerator d left parenthesis sin x right parenthesis over denominator d x end fraction space cos x space plus space sin x space fraction numerator d left parenthesis cos x right parenthesis over denominator d x end fraction close curly brackets end style
 
begin mathsize 14px style fraction numerator d over denominator d x end fraction open parentheses 4 space sin x space cos x close parentheses space equals space 4 space open curly brackets space cos squared x space minus space sin squared x space close curly brackets space equals space 4 space cos left parenthesis 2 x right parenthesis end style

Answered by Thiyagarajan K | 30th Jan, 2022, 06:02: PM

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