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^2 = 0
R^2 = 0
R^2 = 0
1*R^2 = 0 // : 1
R^2 = 0
R = 0
R in (-oo:0) U (0:+oo)
1/(R^2) = 0
1*R^-2 = 0 // : 1
R^-2 = 0
R naleu017Cy do O
R belongs to the empty set
| 4x^2-a^2=0 | | 17/7*21/8 | | 125/2*65/8 | | (80/2+15*3) | | 32/5*35/8 | | 3/8*1/5 | | 17/24*4/5 | | 5/7*4/1 | | 1/33*11/13 | | 33/1*11/13 | | 13/42*7/6 | | 13/42*6/7 | | 1/35*5/7 | | 35/1*5/7 | | 2/5*1/3 | | 4/5*1/3 | | 6/7*9/1 | | 5/6*1/4 | | 1/21*7/11 | | 7/8*5/1 | | 1/5*1/4 | | 10/7*1/8 | | 5/7*14/5 | | 4/5*4/1 | | 4-2=3+5p | | 2n^2+13n+6=0 | | 19/15*5/8 | | 3xa+5xb= | | x/4=9/12 | | 19/15*4/3 | | 2(3x)=-1(x-2) | | 19/15*3/4 |