x? yy '? Is it?
1? cosx^3?
(cosx^3)'=-sinx^3? (x^3)'=-3x^2? sinx^3
2? secy^3?
(secy^3)'=secy^3? tany^3? (y^3)'=3y^2? secy^3? tany^3? hello
3? -3axy?
(-3axy)'=-3ay-3axy '
1(c v)'=c v '
2? (u? v)'=u '? v '
3(u? v)'=u '? v+u? v '
4(u^n)'=n? u^(n- 1)
5? (cos v)'=-sin v
6? (second v)' = second v? Tan? v