求t属于(0,1/2),使D={(x,y)/t
高数题设x=(t+1)e^t,y=t^2*e^t,求d^2y/dx^2
matlab du/dt=d(du)/dx^2 x属于(0,1),t属于(0,T]u(0,t)=u(1,t)=0u(x,
设函数y=y(x)由x=1-e^t和y=t+e^-t确定,求dy/dx和d^2y/dx^2
x=(e^t)sint y=(e^t)cost 求d^2y/dx^2
设参数函数x=ln(1+t^2),y=t-arctant.求(d^2y)/(dx^2).
x=ln(1+t^2),y=t-arctant 求d^2y/dx^2的导数,
已知集合A={y|y=x^2+1,x属于R},B={x|x=5+2t-t^2,t属于R},求A交B的集合
设参数方程x=t-In(1+t^2) y=arctant 确定函数y=y(x),求d^2y/dx^2
x=2sin(t),y=cos(t+pie),求dy/dx,和d^2y/dx^2,在点(0,-1)
参数方程求导习题{x=t+cos2t ; y=2t+sin2t 求t=0时的 d^2 y / dx^2
二重积分求导 F(t)=∫(上限t 下限1)d(y)∫(上限t 下限y)f(x)dx,求F'(2)=?
已知函数y=x^2-2x+3,当x属于[t,t+1]时,求函数的最大值和最小值.这是重难点手册91页例二.