f(x)=sin(2-3x),则f'(x)等于多少?f''(x)又等于多少?

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f(x)=sin(2-3x),则f''(x)等于多少?f''''(x)又等于多少?f(x)=sin(2-3x),则f''(x)等于多少?f''''(x)又等于多少?f(x)=sin(2-3x),则f''(x)等于多

f(x)=sin(2-3x),则f'(x)等于多少?f''(x)又等于多少?
f(x)=sin(2-3x),则f'(x)等于多少?f''(x)又等于多少?

f(x)=sin(2-3x),则f'(x)等于多少?f''(x)又等于多少?
f(x)=sin(2-3x)
f'(x)=cos(2-3x)*(-3)=-3cos(2-3x)
f''(x)=-3*[-sin(2-3x)*(-3)]=-9sin(2-3x)

f'(x)=-3cos(2-3x);
f''(x)=(-3cos(2-3x))'=-9sin(2-3x)