S (sin 5x) (sin 3x) dx =

S (sin 5x) (sin 3x) dx = s = 2*sin(x)-sin(2*x)+2/3*sin(3*x)-1/2*sin(4*x)+2/5*sin(5*x)用matlab画图,求教啊 求不定积分【sin(x)^5 + sin(x)^3】^(1/2) 求∫√(sin^3x-sin^5x)dx sin x S(1-sin^2x)d(sinx)为什么=sinx-1/3sin^3x? lim x->0 (sin x-tan x)/sin (x^3) 2sin^2x - 5sin x cos x=3 cos^2x,求X, 化简sin(2x-pi)sin[x+(3/2)pi]/cos[x+(5/2)pi][1-sin(pi+x)] 傅里叶级数作图f（x）=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si 解方程 sin^2*(3x)+sin^5*(5）x+sin^2*（7x）+sin^2*（9x）=2能看懂吧,sin^2的平方都是sin平方，上面打错了 解方程 sin^2*(3x)+sin^2*(5x)+sin^2*（7x）+sin^2*（9x）=2 sin(sin(x))的奇偶性 3道求极限的题目1.sin 2x/sin 5x （x→0）2.(sin x - sin a)/(x - a) (x→a)3.sin ωx/x (x→0) 已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x) 已知sin(x+π/6)=1/4,求sin(5π/6-x)+sin^2(π/3-x) 已知 Sin(X+ 派/6)=1/4求 Sin(5/6派 - X)+Sin^2 (派/3 -X) (1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x 化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x