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)
3*t^2-((9*t)/t)-3 = 0
3*t^2-9-3 = 0
3*t^2 = 12 // : 3
t^2 = 4
t^2 = 4 // ^ 1/2
abs(t) = 2
t = 2 or t = -2
t in { 2, -2 }
| 8+2(-4z+2)=-6(5z+6)+9 | | s(22)=330 | | 53=8+(6/z) | | 2/3x+1/6=-5/6x+5/3 | | (15-2x)(20-2x)=176 | | 16x-33=14-29 | | 1/8n=2/7 | | 5y^2-15y/y-3 | | 6(3x+5)=(8x+6) | | 0=-5v-23 | | 3823=s/100 | | -22-y=6 | | 6y^2-15y/y-3 | | y+5y=11+19 | | -2x-(5-3x)=6 | | 7385-67x=43x+1996 | | x=1/7y-18 | | v/-50=300 | | 7/8n=42/1 | | 2/5g+9=-2y | | 78=0.05s^2+1.1s | | 75m=-7500 | | -8.5x+13.6y=-68 | | a-.142b=18 | | x+2x+2x-10=180 | | a-1/7b=18 | | 7x+2y=83 | | 15a*a-3a=3-7a | | (18x^4+9x^3+3x^2)/(3x^2+1) | | 43x+1996=3200 | | x-1/7y=18 | | x+2x+x-10=180 |