If it's not what You are looking for type in the equation solver your own equation and let us solve it.
e^(-0.2*t)
(5*x^9)/(-41) = 0
3;9;6;10;2;2
3;9;6;10;2;1
3;9;6;11;2;1
| 2(3x+8)=-45+55 | | 2d+d-3d+2d-d=7 | | -10t+6=8-4t-10t | | y=4+3X-2X | | 13-2x=3(4x-5) | | 2(4)+5y=-12 | | c+3c-c-c=16 | | 6h-5h=10 | | 5x9/-41 | | 2*4y=5-y | | 6c-5c=9 | | 3b-2b=11 | | 10m-12-7m+7= | | f(0)=3x^2+4x-1 | | 7p-2p=20 | | r^2/4-2=34 | | 2r^2+3r=20 | | xy-3x-y-3=0 | | 2(3-8y)= | | 5x+8y=4ax+12 | | 2(3x-1-1)+3=21 | | -5w-4=-3+3w | | 5x-9/3 | | R(x)=190x-0.0002x^2 | | 4x=183 | | 35+28=h | | 5=7(x-4)+3x | | 35-28=g | | 25-8=22x+10 | | 0=1250-16t^2 | | 13=1/5(20x-5) | | -5(2x-9y-7)= |