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)
2.2/x = 5 // - 5
2.2/x-5 = 0
2.2*x^-1 = 5 // : 2.2
x^-1 = 2.27272727
-1 < 0
1/(x^1) = 2.27272727 // * x^1
1 = 2.27272727*x^1 // : 2.27272727
0.44 = x^1
x = 0.44
x = 0.44
| 2x^2-x+2y^2+3y=14 | | (5-2a)*(b+8)=(6b-7)*(3-a) | | =6cos(4x) | | 6+5+4+3+4+3+2+0+7+6+5+4= | | 5x-15/2x-6 | | Sin(7x-23)=cos(2x+14) | | 3x=12-y/3 | | 6n-6-2n=14 | | -5n-n=0 | | 4n-4+2n=-4 | | y=8x+102 | | -16-2n=8(8n-2) | | (.5x^2)=x+.5 | | f(x)=2x-4ln(x) | | x+7=3+x+4 | | ln((3x^5)/(2y^(2/3))) | | -34-5n=-4(7+n) | | 4n-6=-6n-6(3-2n) | | -(x^2)+2x+5=0 | | 5+8m=-8(m-3)-3m | | 8*6b=-7*b | | -1-2(m+9)=-3(m-1) | | ln(3x^5/2y^(2/3)) | | 2(x-12)-1=x-25+x | | 1000=-t^2+16t+936 | | 4(x+6)-5x=2x-(4+5x) | | 5-2a*(b+8)=3-a*(6b-7) | | 15x^2-8x-12= | | 56x2/7 | | ((d-4)/4)^2=100 | | 3x-10=2x+8 | | -10y+18=-3(5y+7)+5y |