If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( y )
y = 0
y = 0
y = 0
y in (-oo:0) U (0:+oo)
4/y = 1 // - 1
4/y-1 = 0
4*y^-1 = 1 // : 4
y^-1 = 1/4
-1 < 0
1/(y^1) = 1/4 // * y^1
1 = 1/4*y^1 // : 1/4
4 = y^1
y = 4
y = 4
| 10=3k+4 | | Y=150x+20 | | xa+yab=0 | | 0=ax+bxy | | 3n-1=-13-3n | | 10-13x=8x+25 | | -6(1+8n)-8n=-6+8n | | 12y+7=61 | | -6x-5=5-2(2x+8) | | 4z-1=10z-55 | | 5x-3=6x-15 | | 14-8k=1+5k | | 5-3k=-7-k | | x^2=logx | | -11+2x=x-3 | | 8x+18=2x+13 | | -7x+6=20+7x | | 8x+10=-5 | | 4x+3=82x | | 6(1-7p)=-204 | | 5x+25=2x+11 | | -7+7x=-5x+17 | | 82=7(n+3)+5 | | -7(7x+2)=378 | | 8(4u-1)-23u=11(2u-6) | | 4m+7+15= | | 6(1+3x)=-66 | | 4m+7+15m= | | 102=6(3p-4) | | 9m+7=15 | | -3(-4x+6)=-6 | | -5(7x+3)=160 |