subtitusi u = sin v , v = 2x+1
f(x) = cos u
f'(x) = -sin u . du <= u = sin v
= -sin(sin v) . d(sin v)
= -sin(sinv) . cos v . dv <= v = 2x+1
= -sin( sin(2x+1) ).cos(2x+1) . d(2x+1)
f'(x) = -2.sin( sin(2x+1) ) . cos(2x+1) . dx
dy/dx = -2.sin( sin(2x+1) ) . cos(2x+1)
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subtitusi u = sin v , v = 2x+1
f(x) = cos u
f'(x) = -sin u . du <= u = sin v
= -sin(sin v) . d(sin v)
= -sin(sinv) . cos v . dv <= v = 2x+1
= -sin( sin(2x+1) ).cos(2x+1) . d(2x+1)
f'(x) = -2.sin( sin(2x+1) ) . cos(2x+1) . dx
dy/dx = -2.sin( sin(2x+1) ) . cos(2x+1)