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)
2/t = 1 // - 1
2/t-1 = 0
2*t^-1 = 1 // : 2
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
| 3(2x-1)=4x-6 | | -m^2-16m=-3m^2-24 | | 1/16x^4-y^4 | | j+5=5.7 | | 2w+4(7+3)=-14 | | 13a+3=29 | | 8x+3y=22 | | m^2-2m+20=7m | | 3x=18y | | n+2.5n=36 | | -5j+-7j+-13=11 | | 21y= | | v^2=8v-7 | | n+2.5n=18 | | -2x2/7 | | 50+6b=8b | | X+40=2x+7 | | 20y-2(3y-70)= | | 16c+-18c+-17=5 | | 2/5=30/x | | 0.85x+0.4(11)=0.6(x+18) | | -12y+8=-52 | | 7x-4+3x+4=90 | | 6x+3-2x+7=26 | | -4.2k+31.5=-65.1 | | f(x)=12sinx+8cosx | | 3/4(3x-4)=15 | | 3(6-c)-30=17c-4(3+5c) | | 0.11h+15.81=0.09h+16.31 | | -x^2-3x=7 | | 3a+3=13 | | 3(4-2x)=4-6x+8 |