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for the function f(x) = sin x, show with the aid of the elementary formula sin^2 A = (1/2)(1  cos2A) that f(x + y)  f(x) = cos x sin y  2sin x sin^2(1/2 y)
 10 months ago
 10 months ago
for the function f(x) = sin x, show with the aid of the elementary formula sin^2 A = (1/2)(1  cos2A) that f(x + y)  f(x) = cos x sin y  2sin x sin^2(1/2 y)
 10 months ago
 10 months ago

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AravindGBest ResponseYou've already chosen the best response.0
f(x) = sin x f(x+y)=............
 10 months ago

Hidden_TwilightBest ResponseYou've already chosen the best response.0
uhm.... I don't get it
 10 months ago

Abhishek619Best ResponseYou've already chosen the best response.1
dw:1371559111312:dw
 10 months ago

Abhishek619Best ResponseYou've already chosen the best response.1
dw:1371559308561:dw
 10 months ago

Hidden_TwilightBest ResponseYou've already chosen the best response.0
uhm, how did f(x+y) = sin(x+y) happen?
 10 months ago

Abhishek619Best ResponseYou've already chosen the best response.1
f(x)=sinx, f(x+y)=sin(x+y) replace x+y in place of x.
 10 months ago

Hidden_TwilightBest ResponseYou've already chosen the best response.0
so f(x) = sin x f(x+y) = sin (x + y) therefore: f(x+y)  f(x) = sin (x+y)  sin x how did sin (x+y)  sin x turned into 2cos (x + [y/2]) sin(y/2)?
 10 months ago

Abhishek619Best ResponseYou've already chosen the best response.1
you should know the transformations. like dw:1371560643711:dw
 10 months ago

Abhishek619Best ResponseYou've already chosen the best response.1
there are two more in terms of cosine. dw:1371560779150:dw
 10 months ago
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