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)
1/t+1/20 = 1/15 // - 1/15
1/t+1/20-(1/15) = 0
1/t+1/20-1/15 = 0
1*t^-1 = 1/60 // : 1
t^-1 = 1/60
-1 < 0
1/(t^1) = 1/60 // * t^1
1 = 1/60*t^1 // : 1/60
60 = t^1
t = 60
t = 60
| 8(1+5x)=13+3x | | 4/3x+2/6x=50/6 | | 18+3x=x+18 | | -27-9x=27-22x | | 1/2y+3=9 | | 4+6x-16=3x-6 | | 135x*82y= | | 8(x-6)=3(3x-1) | | 5x+8=-42-9x | | -0.3x^2+x-(n/5) | | -6*18= | | Bx+Fy=Jforx | | 11(p-29)=759 | | 3+2m-1=9m+2-6m | | 3(1-5y)-2y=6 | | v/v^2-2v-3-4/v+1 | | 24=3-2(5) | | 127-4x=10-7x | | 4/5-1 | | 4log(8)+9log(6)-4log(48)= | | 24=3L-2w | | 4x+7y-9xy+8y= | | 4x=3x-23 | | 5/y+15/y=4 | | 2x(x-3)+7x-4= | | 5x=3x-50 | | 2-9+9= | | -3x+8x^9= | | 24/8 | | (15y/4b)(2b^4y^5/5y) | | -3x+8x^9-2x+4x^9+9= | | W=B+Bry |