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)
l = 500/x // - 500/x
l-(500/x) = 0
l-500*x^-1 = 0
-500*x^-1 = -l // : -500
x^-1 = l/500
-1 < 0
1/(x^1) = l/500 // * x^1
1 = (l/500)*x^1 // : l/500
500*l^-1 = x^1
x = 500*l^-1
x = 500*l^-1
| 2lnx-ln(2x-1)= | | .4x+x^2=.96 | | 8x-8x-5=20 | | 5m=3msquared | | 4x-2=5x+11 | | r^3+24r-160=0 | | .2x+x^2=.99 | | 3t^2+23t-8=o | | 8+10x=26+x | | 0.06x=1730 | | 2X+3X+4=what | | .04+.4x+x^2=1 | | 2(3x+8)=5(x-7) | | q=8p-45 | | 42y+5=71 | | 11x-17=8x+9 | | 12x+3-6x-3=90 | | 9q+54=3q+90 | | 8+2b=10 | | 4j-4=2j+20 | | 3[5-4(4-c)]-5=5[3(5c-4)+2]-26 | | -6+y^2=10 | | x^2+.4x=.96 | | -2x^2+8x-56=0 | | 6x-9=x-4 | | -8+2a=-4 | | Y-25=-3(x-(-7)) | | 2x/3x-5/6 | | 2x^2-8x-56=0 | | 7x-2=-58 | | 5=7n-2 | | 3(x-10)-4=-6x-2 |