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)
3/5-n-(1/n) = 0
3/5-n-n^-1 = 0
3/5*n^0-1*n^1-1*n^-1 = 0
(3/5*n^1-1*n^2-1*n^0)/(n^1) = 0 // * n^2
n^1*(3/5*n^1-1*n^2-1*n^0) = 0
n^1
(3/5)*n-n^2-1 = 0
(3/5)*n-n^2-1 = 0
DELTA = (3/5)^2-(-1*(-1)*4)
DELTA = -91/25
DELTA < 0
n in { }
n belongs to the empty set
| 45-18y-12y=18 | | 3x^2+26x+19=3 | | 4w^12-12w^6+9=0 | | (180-x)=2(90-x)+47 | | 15x^2+4x-7=-4 | | z=5x-2y+10 | | 0.4(x+3)-0.6(x+3)=-0.2x+0.6 | | 0.333333*e^((‑x)/(1.5*10^‑3)) | | 13.7t+-4.7=9.9+8.1t | | -16t^2-160t=0 | | 4(x+3)=4x+6 | | 14/36 | | b=(3d-c)/d | | t^2+6t-100=0 | | 44-4x=14-10x | | 14(y-5)/36(y-5) | | 6y-14=3y+7 | | v^2+6b+8=0 | | 2y-3=5y-54 | | cos(2x)=-cos(3x) | | 15-3(5x+2y)= | | 5(3n+1)=6(8n+5)+8 | | 10w^3+13w^2+4w=0 | | 6y-6=4y+12 | | 4x^4=2048 | | 6(t-4)+6t=6(2t+5)-8 | | -14x+28=0 | | 10w^6-160w^2=0 | | (90-x)=(180-x)/3 | | 9x^2-62x-13=-6 | | 44=.5x(10+6) | | -3a^2b+12ab-12b=0 |