练习册上有一题：f(g(x)).

练习册上有一题：f(g(x)). 求f[g(x)] | f(x) | / | g(x) | = | f(x)/g(x) | 吗? (g(x)/f(x))'公式? g(x)/f(x)求导 f(x)g(x)不定积分 max{f(x),g(x)}=1/2(f(x)+g(x)+|f(x)-g(x)| 证明(f(x)*g(x))'=f'(x)*g(x)+g'(x)*f(x) 证明(f(x)*g(x)）'=f(x)'*g(x)+g(x)'*f(x) f[g(x)]=f(x)*g(x)? f(g(x)),g(f(x))和f(x)g(x)相等吗 f(g(x))的导数f'(g(x))的公式 f(g(x))=g(f(x))怎么证明 f(x)=2x-1,g(x)=x^2,则f[g(x)]=?,g[f(x)]=?,f[f(x)]=?,g[g(x)]=? 设f(x)=x^2 ,g(x)=2^x 则f[g(x)]= g[f(x)]=f[g(x)]= g[f(x)]= f(g(h(x))) 求导 f[g(x)]的期望 f(x)/g(x)=f(x0)/g(x0)=f(x)+f(x0)/g(x)+g(x0).为什么?