If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( p )
p = 0
p = 0
p = 0
p in (-oo:0) U (0:+oo)
4/p = 7/2 // - 7/2
4/p-(7/2) = 0
4/p-7/2 = 0
4*p^-1 = 7/2 // : 4
p^-1 = 7/8
-1 < 0
1/(p^1) = 7/8 // * p^1
1 = 7/8*p^1 // : 7/8
8/7 = p^1
p = 8/7
p = 8/7
| x-1.4x=-2.4 | | 6+.80x=9x | | -2w-4=3(w-3) | | y+9x=-36 | | 0.5(y+2)-3y= | | y=-x^2-10x+16 | | -2(3x+4)+2x=12 | | 28=1/2h(7) | | x+27y^3=0 | | 5/8-x=3/8 | | 7-3x=2+5x | | y^2=2y+4 | | 5(x-3)-x=25 | | 2x-10=x-3 | | 7x+5=x-13 | | -3=2u-7 | | 22(5c-5.1)=-20.2 | | 2/3x-4=17 | | 7x-37=2x+1 | | y=50x+450 | | 5x+3(x-4)=2x+1 | | n-52=27+27n | | -z+2+z=-10z+z | | 2=3(1)+b | | 8/9-5m/9-23/9 | | 55x-34=x | | 7X*7=15 | | 35x^2-7x+24x+24=0 | | -0.8x+3600=0 | | 2x/3-=x/15-8/3 | | 10-4w+7w-2=w | | -z+2=-10z |