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)
5/8 = 6/x // - 6/x
5/8-(6/x) = 0
5/8-6*x^-1 = 0
-6*x^-1 = -5/8 // : -6
x^-1 = 5/48
-1 < 0
1/(x^1) = 5/48 // * x^1
1 = 5/48*x^1 // : 5/48
48/5 = x^1
x = 48/5
x = 48/5
| b=y-20 | | (7i-3u)/33(6u-6i) | | (m/0.4)=12 | | Y-x=r | | 12*(3*5)= | | sqrt(x-10)=7 | | 3(6+y)+2y=8 | | sqrtx-10=7 | | 6=x+y | | x+(x+3)=13 | | 3n+10=7n | | (u/6)=8 | | 2/3(x)-3=-11 | | 4(2x-1)=11+3+5 | | m^3-3m^2-my-1=0 | | 12+x=y | | 5(-3y+2x)= | | (1/3)t=33 | | 12k^2-60k=-75 | | 300000y=x^100 | | 2.6=10x+1.1 | | (6-3i)(6+3i)=y | | 0.2x+19.9=x-4.98 | | B+4b-7= | | f(x)=x-3ln(2x) | | 1.6+0.3x=0.4 | | y=2/3(9)-3 | | 3.5x-2.1=6.1 | | 9x-17=3x+43 | | f(x)=3ln(x) | | F(x)=-1/5x^2 | | f(x)=x^3ln(x) |