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)
3/8 = 1/x // - 1/x
3/8-(1/x) = 0
3/8-x^-1 = 0
-1*x^-1 = -3/8 // : -1
x^-1 = 3/8
-1 < 0
1/(x^1) = 3/8 // * x^1
1 = 3/8*x^1 // : 3/8
8/3 = x^1
x = 8/3
x = 8/3
| -2(7-n)+4=12 | | 16x=20x-13 | | -16x^2+48x+0=20 | | 2y(y^2)=128 | | 40x=39x+13 | | 240+30x=70x | | 4x=1x+3 | | (3/16)=(1/x) | | y^2-3x=-x^2 | | 4x^2+9+15x=0 | | 0.2(60)+0.05(12-x)=0.10(63) | | -4(3t-5)+9t=8y-9 | | -2(6x-8)+1=-12x+17 | | x8/x16 | | 0.19y+0.05(y+7000)=2510 | | d^4+2d^3-3d^2-4d+4=0 | | 2a(-2)+b=-4 | | R(x)=x*600-0.5x | | 5x+8=23-2x | | x^2=17x+60 | | -4.9x^2+14.7x+1=10.8 | | 10-3(a+2)=8+9 | | 20n^2-9n-20=0 | | 0.25-0.03(x+2)=0.02(3-x) | | 995=6x+x^2 | | 16x-8=.5(110+2x) | | 2x-43=64358 | | 3/9-5/9=2/9-8x/9 | | 18//.04 | | t^2-14t-22=0 | | (3a-4)(2a+5)= | | 55.96=Pi*r*8.5 |