If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
((81*x^-4*y^8)^1)/4 = 0
(81*x^-4*y^8)/4 = 0
81/4*x^-4*y^8 = 0 // : 81/4*y^8
x^-4 = 0
x należy do O
x belongs to the empty set
| y-1=-8(x-(-5)) | | 48x^4=44x^5 | | 2x+10y=1000 | | 3x+2-10x^2=2x-9x^2 | | 4sin(3t)=2 | | 660=82.5h | | H-(2h-1000)=4400 | | x=2n | | Log(5x+4)=2 | | 4n-4=8n+8 | | x=n | | 48b^2+52b-140= | | 30x^3=12x^4 | | -4y+6x=12 | | 9x+2y=73 | | x/60=60/100 | | yp=1/p | | 9w=6480 | | (2x-6)/(16-8y)=0 | | 3-6y=10x | | 9x+4x-3x=26+4 | | x+11-6x=5-4x | | m-(5/8)=(-1/4) | | 4=-4-4x | | (2x-6)/(16-8y) | | 5x+2(11-4w)=82+x | | 6p+8=2p-24 | | 372836+392639= | | 7(A-3)-2A=6A+1 | | 42=2v | | 100-4z=64 | | -x-16x+8x=18 |