If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( r )
r < 0
r < 0
r in <0:+oo)
r^(1/2)*r^(3/2) = 0
1*r^2 = 0 // : 1
r^2 = 0
r = 0
r = 0
| y=Ix-4I | | 1/2r-3=3(4-2/3r) | | .15x+x=150000 | | 1.96g-14=0.70 | | 6.1=7.5-0.2x | | (86x^2+21x^3-6)+(18x+7x^8-42x^2+3)= | | 7x-4=20+2x | | -32=-5+13 | | f(x)=7*(x*x)-4x | | 12.52=2g+3.54 | | (P3/2)-8=0 | | -174=6(-6m+7) | | -3v+3(1-4v)=6(1-3v) | | 2-(-x)=(3-7)squared | | 0.97+a=2.60 | | 105=7(r+8) | | Y^2=14x | | X+5+x+8=11 | | -2+x=-32 | | 17r=-272 | | x-4x=29 | | -17=x-2 | | 5=x/18 | | f(n)=4n-10 | | 7x+1=-11-5x | | y=x^2-6x-24 | | 9xy-9yx= | | 2/3=4/8 | | 14+3d=11d-6 | | -4x-5=2x-47 | | 3(8-2x)=12 | | 2500=32x-70 |