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)
30 = 10/X // - 10/X
30-(10/X) = 0
30-10*X^-1 = 0
-10*X^-1 = -30 // : -10
X^-1 = 3
-1 < 0
1/(X^1) = 3 // * X^1
1 = 3*X^1 // : 3
1/3 = X^1
X = 1/3
X = 1/3
| 6.3-q=21.8 | | 5y-16=20 | | 2b-3=b+1 | | (x-1)(x^3+5x^2+8x+4)= | | X^2-56=-1x | | x=60-5(x+3) | | 2085000000.00+5550000.00x=3000000000 | | (x+4)(x^3+5x^2+8x+4)= | | 0.75(x+12)=55 | | (x-9)(x^3+5x^2+8x+4)= | | (x+1)(x^3+5x^2+8x+4)= | | -2-3(6x-11)=-7 | | 2a^2-15=a | | 15x-4=3[5x-4] | | 7y^2-40=0 | | X^3-z^3=0 | | Y=sb-st^5 | | 10a^2-9a+2= | | 9(x-2)+6=9x+2 | | 3056890000.00-15000000(5)= | | 2x^2-24x=33 | | 4x-22+5=3x-7 | | X+2-5=10 | | 5x+8y=117 | | f(x)=x^4-3x^3-9x^2-27x-162 | | 2f+6=24 | | 15x-6y=30 | | 1.4x=182 | | x*.02=2500 | | 6x=2+7x | | u=232+36n | | 3x-2y-27=0 |