If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
2/n = 15/6 // - 15/6
2/n-(15/6) = 0
2/n-5/2 = 0
2*n^-1 = 5/2 // : 2
n^-1 = 5/4
-1 < 0
1/(n^1) = 5/4 // * n^1
1 = 5/4*n^1 // : 5/4
4/5 = n^1
n = 4/5
n = 4/5
| t^3-8t^2+t+82=90000 | | 13x+4y=33 | | -80=10(c+12) | | 15x^2+10x=-12x-8 | | 7*z+6=8 | | -3/4x+9.5 | | 0.4(f+8)=12 | | -(1-3n)=17 | | 3(m-6.5)=27 | | 3(y-5)=2x | | -4(-7)= | | 5(2x-5)=-25 | | 8=-3/4(2)+b | | 9x^4-12x^2+4=0 | | -3x+4/3=8/3 | | 6-(-3)-5= | | -6-(-15)+(-4)= | | n+4+5=6 | | -3+4/3=8/3 | | 2/10b=99 | | 3x+6=67 | | y+2y=3+3(6+1) | | -8-y=40 | | -5(p+1)=-5 | | 5p^2+3p-7=0 | | 8(c+3)+4c= | | 3.5m=105 | | 10n^2+33n-54=0 | | 2x/5+20=10 | | 3/7+4/9 | | 5x-25=3x-43 | | x^2=8x+140 |