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)
30/6 = 150/n // - 150/n
30/6-(150/n) = 0
30/6-150*n^-1 = 0
-150*n^-1 = -5 // : -150
n^-1 = 1/30
-1 < 0
1/(n^1) = 1/30 // * n^1
1 = 1/30*n^1 // : 1/30
30 = n^1
n = 30
n = 30
| 3/14//7/10 | | 110/500 | | 8+2(-10c+6)+3(5+-8)= | | 35x^2-20x-55= | | h(x)=3.5-3/4x | | 5y-4=62-6y | | f(x)=4x^2+16x+13 | | 200x+1=250x | | f(-2)=4+6+1 | | 7(3y+6)= | | 7(3+6)= | | b+4=2h-5 | | 5(b-2)=30 | | 4s+35=1 | | 9x+14=2x-17 | | -4q-10=-4q+10 | | 2.11+y=1.7 | | 5b-2b-8b= | | -4=2-14 | | 3h=37 | | .5(5-2x)=x/2 | | -5(-10+6q)=-3(10q+3) | | 2z-9=33 | | 3n+3=22 | | 6r+4s=2r+8 | | 2(8-2k)+12=-12 | | a^4-18a=-81 | | 13=2p+7 | | (3x^2-7x-3)-(2x^2+1)=x^2+11 | | 2(z-2)=7z+1 | | d/3-5=3 | | (-6)(12/9)= |