If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
((7*x)/12)*((3*x^2)/x)*y = 0
7/4*x^2*y = 0 // : 7/4*y
x^2 = 0
x = 0
x in { 0}
x belongs to the empty set
| 7(x-4)-6=-6(-4x+5)-7x | | 5+-2x=15 | | 9x+3=5x+18 | | 3x+5-5x=15 | | 2g+0.45=0.95 | | 9x+6=10x+1 | | 4x+7-x=5+x | | 8x-12x+4x= | | 15-a/2=-9 | | 12-a=11 | | -35-3/5f=-7 | | 9=-3(2x+9) | | 1(5x-1)=-2-6x | | 23+3f=14 | | 12(3-w)= | | 19=4q+11 | | 0.9x+0.7=5.11 | | x+8+x+1+4x+2+x+1=x | | 72x-8= | | x+8+3x-5+2x+13=x | | 3/10-15/10=2/10x | | (4x-7)+(-2x-3)= | | .32b+.23b+.056+32b+23b+6=b | | x/5-y/6=1/30 | | 5-7(-3+x)-6=5(4-2x)+4 | | (4x-2)+(6x+6)= | | 9y-4=6y+6 | | 108/624 | | 6(5g+2)=30q | | -5(x-10)=60 | | 4*cos(x)+2*cos(2x)-1=0 | | I=1.5h+6 |