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 = 0
t = 0
t = 0
t in (-oo:0) U (0:+oo)
4/t = 2 // - 2
4/t-2 = 0
4*t^-1 = 2 // : 4
t^-1 = 1/2
-1 < 0
1/(t^1) = 1/2 // * t^1
1 = 1/2*t^1 // : 1/2
2 = t^1
t = 2
t = 2
| 2w-7=w-1 | | 4/1=2 | | ln=7x+11 | | 0=0.2x^2+1.2x-2.2 | | (4n-15)=(3n) | | 1+213125+2359-1234x=451z | | (9m)=(25m+22) | | 2(1+4x)=5x+23 | | 8-71/4 | | 6h+8=20+2h | | 2/3(120) | | 2x^3-2x^2+3x-3= | | (4y-8)=(79+y) | | 3(x+5)+4=49 | | a^2-32=-18x | | 5x=765 | | 7(2y-10)=14 | | (log(3x))+3(log(5x))=15 | | 7(2y-8)=14 | | W^6-25v^2=0 | | -4/5=-2/3x-3/4 | | -7/8t=5/6 | | sqt^2x+10-6=2 | | -7x+5+2x=4x-13 | | X^3-3x^2-27x-18=0 | | 7(x+2)+2x+3=2(x+26) | | 2(7y-5)=4 | | 12y+8=11 | | 475=25u | | (x/(5x-25))((x^2-5x)/9) | | -7(y+7)=-5y-31 | | 3x-5+x=-2x-11 |