If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( t )
t^2 = 0
t = 0
t^2 = 0
t^2 = 0
1*t^2 = 0 // : 1
t^2 = 0
t = 0
t = 0
t = 0
t in (-oo:0) U (0:+oo)
4/t-(2*t)-(8/(t^2))-2 = -2 // + 2
4/t-(2*t)-(8/(t^2))-2+2 = 0
4/t-2*t-8*t^-2-2+2 = 0
4*t^-1-2*t^1-8*t^-2 = 0
(4*t^1-2*t^3-8*t^0)/(t^2) = 0 // * t^4
t^2*(4*t^1-2*t^3-8*t^0) = 0
t^2
4*t-2*t^3-8 = 0
{ 1, -1, 2, -2, 4, -4, 8, -8 }
1
t = 1
4*t-2*t^3-8 = -6
1
-1
t = -1
4*t-2*t^3-8 = -10
-1
2
t = 2
4*t-2*t^3-8 = -16
2
-2
t = -2
4*t-2*t^3-8 = 0
-2
t+2
4*t-2*t^2-4
4*t-2*t^3-8
t+2
2*t^3+4*t^2
4*t^2+4*t-8
-4*t^2-8*t
-4*t-8
4*t+8
0
4*t-2*t^2-4 = 0
DELTA = 4^2-(-4*(-2)*4)
DELTA = -16
DELTA < 0
t in { -2}
t = -2
| (4z+6)(4+0)=0 | | x+0.02x=127000 | | 3s^2+9s=0 | | 8x-3(6-x)=70 | | -1/3t=-4/3 | | log[2](x-4)=3 | | 2x+50+3x-20=180 | | -1/3=-4/3 | | -6x^2+12x+48= | | -1/3=-4/2 | | 4/7x^3;y/8x^4 | | 6=18n | | V^3=-20 | | 4=log(5)625 | | -32x^2+30=0 | | 10x+0.15=2x+0.30 | | ((x)/(x-3))-((12)/(x))=1 | | 3x^2+4y^2-24x+48y+180=0 | | 3(y-1)y-2y+2(y-1)= | | -18=1/2y | | m^2+4x+4=1 | | X-0.34x=1452 | | x(75)=27 | | ln((x^2)+2)=2.6 | | 3ln(X)-2ln(X^2)+ln(x+1)=0 | | 4x^3+11x^2-45x=0 | | 12(2x+1)=10(3x-3) | | 4(-7)+9y=17 | | 2r(r+4)=(r-3)(r-3) | | m^2-4x+4= | | 4(-7)+9x=17 | | 2xsquared-16= |