If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( f )
f = 0
f = 0
f = 0
f in (-oo:0) U (0:+oo)
5/f = 3/6 // - 3/6
5/f-(3/6) = 0
5/f-1/2 = 0
5*f^-1 = 1/2 // : 5
f^-1 = 1/10
-1 < 0
1/(f^1) = 1/10 // * f^1
1 = 1/10*f^1 // : 1/10
10 = f^1
f = 10
f = 10
| 8=0.5(10+AC) | | -7(0.1x-0.2)-0.9=-0.2 | | -15+5y=45 | | 3x^2+13x-10/3=0 | | 128-34+4=x | | 9x^2+39x-10=0 | | 24-8x=3 | | 55x+65y=420 | | 2-2/3x=1/4 | | y-2.5=0.75 | | y-2/3=7/8 | | 100(0.60(x+80))=0 | | 37/8(n-4/3)+1/2(2n+10/3)=-81/8 | | 53/8-23/4 | | -9=4n+3 | | 12=-x-12 | | 3/8+1/8 | | 7=m/4-1 | | 2/3x+4=10-5/6x | | -(2x-3)=9 | | -23=6x+5-x | | -5x+3=-5x-4 | | 8n+10=2(3n-13) | | 4-3x=9-10x | | 3x+1+.5x=7+15+7x | | X-5=3(2x+4)+3 | | -2=4x^2-18 | | -4m+2(3m+4)=5(7+m) | | 3=5x+18 | | -475/4=29/8(13/4n-4)+5/4n | | x^4-12x^3-64x^2=0 | | 4x-7=7x+4 |