f(x,1)=[sin(x^2)]/x x≠0
0 x=0
即函数在x=0处是分段点,因此求导数要用定义
lim f(x,1)-f(0,1) lim [sinx² ] / x
x->0------------------= x-->0 ------------ =1
x - 0 x
f(x,1)=[sin(x^2)]/x x≠0
0 x=0
即函数在x=0处是分段点,因此求导数要用定义
lim f(x,1)-f(0,1) lim [sinx² ] / x
x->0------------------= x-->0 ------------ =1
x - 0 x