18*x=22*(x-3) 求X
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
18*x=22*(x-3) 求X
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
3分之x - 4分之x = 18 求x
6X=3(18+x)求X
x+3/7x=18求x
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
若x^2-8x+13=0求(x^4-6x^3-2x^2+18x+23)
已知x*x-3x+1=0求√(x*x+1/x-2)=?
f(x)=3^x+x^3+x^(x)sinx 求f'(x)
y=(2x*x-2x+3)/(x*x-x+1),求值域?
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?