设y=1n3x-cos5x,求dy
y=ln3x-cos5x dy={3\/(3x)+5sin5x}dx = {1\/x + 5sin5x}dx
设y=1n3x-cos5x,求dy
dy=3*(1\/3*x)+5sin5x
设y=1n3x—cos5x 求dy
解:y'=(ln3X - cos5X)'=3x(1\/3X)-【5x (-sin5X)】=1\/X+5sin5X 注:x为乘号 X为英文“埃克斯”
设y=1n3x一cos5x求dy
y=ln3x-cos5x dy={3\/(3x)+5sin5x}dx = {1\/x + 5sin5x}dx
y=ln3x-cos5x,求dy
y=ln3x-cos5x,求dy dy=3\/x-5sinx