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)
9/8 = 18/t // - 18/t
9/8-(18/t) = 0
9/8-18*t^-1 = 0
-18*t^-1 = -9/8 // : -18
t^-1 = 1/16
-1 < 0
1/(t^1) = 1/16 // * t^1
1 = 1/16*t^1 // : 1/16
16 = t^1
t = 16
t = 16
| U-5/7=4/2/7 | | 3+91x=39+51 | | 3(x-8)=2x-(7x+12) | | 2x^2+3y^2-8x+3y+10=0 | | z^2-(3+i)z+2+2i=0 | | 4x-3-3x=12+2z | | 5y-6y^2+1=0 | | -2-4x-x=x-8 | | (2x-5)*4+9= | | 6x=7x-8 | | x^2-8x-108=0 | | 7a-(6b+8b)= | | 12-x+13-x=15 | | 2a+8b-3a= | | Cos(x)-0.5=0findx | | V-3/4=4/5 | | (2-x)/2=(2x-3)/3 | | -16t^2+35t+12=0 | | 1.5x^2-1.5x-3=0 | | 2400+80x=y | | x^4-6x^3-1=0 | | Cos(x)-0.5=0 | | 0=-0.5x^2+40x-300 | | 3(6+w)=2(w-1) | | .0025=1/x | | 2400+800x=y | | -2(y+3)+5(y-1)=-4 | | x^(2/3)-7x^(1/3)=-12 | | 9x^2-9x+72=0 | | 2(b+4)=2b+40 | | -2+3x=-8+18xfraction | | 5+y=19 |