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)
0 = (4/x)/5 // - (4/x)/5
0-((4/x)/5) = 0
(-4/5)*x^-1 = 0
-4/5*x^-1 = 0 // : -4/5
x^-1 = 0
x należy do O
x belongs to the empty set
| 12q+2=12q | | 0.32z=2.88 | | 5(x-8)=8x-28 | | 1+2+x=54 | | 11-12s=-11 | | 6n+8=8n | | 13x-17=21x+26 | | 24+3z=2z+29 | | 7x-1=-21x+30 | | 4(n+3)=3 | | 19x+30=22x+9 | | 1/2x-1=7 | | 37-8n=-5(3n-1)-3 | | -m=-6 | | 5(3x-5)=28 | | 3n-2=3+2n | | x*x+16=25 | | 4(1+4n)=-35+3n | | 10x-5x=3x | | 1.29x=3.87 | | by=-ax+c | | 2+4u=30 | | -20+8r=4(r+1) | | F(x)=f(-x) | | 15x-27=-6x-20 | | 6x-8=74 | | m-3=28 | | -23=5x-3 | | m-3=75 | | 1x-8=24x-22 | | -6x+3y+15x-8= | | 7y-2(3y-7)=18 |