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)
5/4 = 30/n // - 30/n
5/4-(30/n) = 0
5/4-30*n^-1 = 0
-30*n^-1 = -5/4 // : -30
n^-1 = 1/24
-1 < 0
1/(n^1) = 1/24 // * n^1
1 = 1/24*n^1 // : 1/24
24 = n^1
n = 24
n = 24
| 1/2(3r-1) | | 4(7v)= | | 6x+0.4=18.4 | | (-2)-x=5 | | 7y-y=x | | -5(v+4)=-(3v+2) | | x-40+3x-20=180 | | 2x^3+0x^2-12x=0 | | N/12=5/8 | | 26=30+-24w | | X-(3)=-7 | | 37.8/28.5= | | -6x^2-6=3 | | -6+c=10 | | 6x+3x-20=561 | | 1/3-11=38 | | 2x+22=5x+41 | | 6x+3y-20=561 | | (-20)-23= | | 3x/2-1/3=5/4 | | 2x+8y=72-x | | 6x-20=561 | | .25(9y-1)+.125(6y+7)= | | -8(b+6)-1=-40-5b | | sen(x)+cos(x)=1 | | 3x-20/561=6 | | (G/3)-=15 | | 18x+2y=14fory | | 5x+7=9x+63 | | G(x)=4x^2+8x+3 | | 3x-20(6y)=561 | | 18x+22=162x+150 |