f[g(x)]=f(x)*g(x)?

| f(x) | / | g(x) | = | f(x)/g(x) | 吗? 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(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(x))=g(f(x))怎么证明 导数符号为什么(f(x))'=f'(x),(f(g(x)))'≠f'(g(x))? f(x)/g(x)=f(x0)/g(x0)=f(x)+f(x0)/g(x)+g(x0).为什么? 求f[g(x)] f(x)=g(x-2) f(-x)=g多少?f(x)=g(x-2) f(-x)是等于g(-x+2)还是g(-x-2)? 设f(x),g(x),h(x)属于F[x].证明[f(x),(g(x),h(x))]=([f(x),(g(x)],[f(x),h(x)])第四题 设f(x)=o,x0 g(x)=0,x0 求f[f(x)],g[g(x)],f{g(x)],g[f(x)] (g(x)/f(x))'公式? g(x)/f(x)求导 f(x)g(x)不定积分 f(x)=x^2,g(x)=2^x求f[g(x)]= g[f(x)]=