sin(x2 1)的导数
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y=sin(e^-x)这是一个复合函数=cos(e^-x)*(e^-x)‘=-e^-x*cos(e^-x)
[sin(x^5)]'=cos(x^5)×(x^5)'=cos(x^5)×5x^4=5x^4cos(x^5)
(sin(cosx^2))'=cos(cosx^2)*(cosx^2)'=cos(cosx^2)*(-sinx^2)*2x=-[2xcos(cosx^2)*sinx^2]
(sinx)^2求导是2sinxcosxsin(x^2)求导是2xcos(x^2)
∫sin²xdx=∫(1-cos2x)/2dx=1/2·∫1dx-1/2·∫cos2xdx=x/2-1/4·sin2x+C所以x/2-1/4·sin2x+C的导数是sin²x
(1-cosx)'=sinx[(1-cosx)^2]'=(1-cosx)'*2(1-cosx)=2sinx(1-cosx)[sin(1-cosx)^2]'=[(1-cosx)^2]'*cos(1-co
5sin^4x*cosx
如果y=f(g(x))那么y'=g'(x)*f'(g(x))y'表示y的导数,如此类推所以y=sin(nx)的导数就是(nx)'*[sin(nx)]'=n*cos(nx)现在高考要考导数微积分了?
你算错了,导数分子是1,(cosx)′=-sinx;导数应是1/sin²x;
y=sin^3x是复合函数可以设t=sinxt'=cosxy=t^3y'=3t^2*t'y'=3sin^2x*cosx
y'={[(sinx)^n][(cosx)^n]}'=ncosx(sinx)^(n-1)-nsinx(cosx)^(n-1)
∵y=x^(sinx)∴lny=sinx*lnx两边求导:y'/y=cosx*lnx+(sinx)/x∴y'=y[cosx*lnx+(sinx)/x]=x^(sinx)[cosx*lnx+(sinx)
(sin(x/2))'=(1/2)cos(x/2).再问:帮我做下这个好吗?
cosx谢谢o(︶︿︶)o再问:лл
[sin(1/x)]'=cos(1/x)(-1/x^2)=-1/x^2cos(1/x)
用链式法则:y=sin(πx)dy/dx=dsin(πx)/d(πx)*d(πx)/dx=cos(πx)*π(dx/dx)=cos(πx)*π=πcos(πx)
66X21+19X21+85X19=21*(66+19)+85*19=85*(21+19)=3400
Sin3x=3sinx-4(sinx的三次方)因此sinx的三次方=3/4sinx-1/4sin3xN阶导数为3/4sin(x+n*π/2)-3的N次方/4sin(3x+n*π/2)
=[sin(1-x)]'=cos(1-x)*(1-x)'=-cos(1-x)
(x*sinx*cosx)'=(1/2xsin2x)'=1/2(sin2x+xcos2x*2)=1/2sin2x+xcos2x