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)
836/t = 19 // - 19
836/t-19 = 0
836*t^-1 = 19 // : 836
t^-1 = 1/44
-1 < 0
1/(t^1) = 1/44 // * t^1
1 = 1/44*t^1 // : 1/44
44 = t^1
t = 44
t = 44
| 5(3x+9)-2x=14x-2x-5 | | 3/2*n+2=-2/3(n-9) | | 9(x-1)(2x+3)=0 | | 5n=41 | | 2/3*-6+2=-2/3(-6-9) | | 10x+(8x-16)+(12x-8)+(7x+2)+(9x+4)+(6x+10)= | | 2/3*-3+2=-2/3(-3-9) | | 10y^2-30y=0 | | 4x^2-68x+225=0 | | 2/3*6+2=-2/3(6-9) | | 2/3*3+2=-2/3(3-9) | | y/67=5 | | 4x^2-76x+225=0 | | 6x^2+48x+78=0 | | 4cos^2(x)+4sin^2(x)-5=0 | | n/56=8 | | 2z+7=12 | | 4=3z-2 | | x/13=22 | | 8x+20=54 | | 2x-1.4= | | Cos5x^1/2 | | -16x^2+80x+45=0 | | e^7+2=5 | | 975/t=15 | | 4x^2-y^2-24x-4y+16=0 | | 6(2x+10)(2x-10)=0 | | 2(15x-18)=3(30x-10)+8 | | x+.07x=25 | | (40w+200)(w+2)=40 | | y=3x^2-14 | | -x(x-2)(3x+5)=0 |