sin(x/2)乘cos(x/2) 求导
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sin(x/2)乘cos(x/2) 求导
sin(x/2)乘cos(x/2) 求导
sin(x/2)乘cos(x/2) 求导
y =sin(x/2)cos(x/2)
= (1/2)sinx
y' = (1/2)cosx
=1/2(cosx/2)^2-1/2(sinx/2)^2=1/2(sinx/2+cosx/2)(sinx/2-cosx/2),给个采纳呗,谢啦
sin(x/2)乘cos(x/2)
=1/2*sinx
所以导数=1/2*cosx
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