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)
10-(1000/x) = 0
10-1000*x^-1 = 0
-1000*x^-1 = -10 // : -1000
x^-1 = 1/100
-1 < 0
1/(x^1) = 1/100 // * x^1
1 = 1/100*x^1 // : 1/100
100 = x^1
x = 100
x = 100
| 6x+11=4x*15 | | 2(t)=t^2-1 | | 17=21-4y | | 0=g^2-6g+12 | | 90+40+6x-10=180 | | x+3=58-4x | | 4x+6-10x+13=10 | | 3u+30=6(u+1) | | 8x+6=23 | | x+3=5x-4x | | 16+8x=7x-21 | | h=14 | | 2x+8y=58 | | 24(7/8n) | | tan50=18/x | | x+3+3x-1+4x=34 | | 15x=8x+84 | | 41+x+72+x+75=180 | | 11x-12=15x-8 | | 4d-2=d+5 | | 13x+8y=64 | | -5=x+-17 | | 7(6)=12 | | 7m-3(2m+7)= | | 5x-6=-6x+5 | | 90+5x+11x-6=180 | | x/2-15=45 | | -42=6s | | z^2-4z+9=0 | | 2(5x+3)-(3x-2)= | | 6(5)+5y=30 | | 12=6(x+5)-4x |