Grade 11Differential Calculus
if sinxcosy{f(2x+2y)-f(2x-2y)}=sinycosx{f(2x+2y)+f(2x-2y)}
then find relations between f(x) and f'(x)
1 Answer
Rathod Shankar AskiitiansExpert-IITB
simply use componendo-dividendo and get
f(2x+2y) = sin(x+y)
f(2x-2y) sin(x-y)
hence your function is f(x) = sin(x/2)
:)
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