If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
4*x^5 = 0
4*x^5 = 0
4*x^5 = 0
4*x^5 = 0 // : 4
x^5 = 0
x = 0
x in (-oo:0) U (0:+oo)
(8*x^3)/(4*x^5) = 0
2*x^-2 = 0 // : 2
x^-2 = 0
x należy do O
x belongs to the empty set
| 1+4t^2+4t^4=0 | | 8x^3/4x^5 | | 100-6X=46 | | 4x+6x=2x+3 | | X-10=x-18 | | 9.1k= | | 7/20and7/12 | | 24x-9y=33 | | 6=x(8-2x) | | 13x+5y=1300 | | 2.5/12 | | 7w/10=41/10 | | (2x+3)+(3x-5)=180 | | ln(7x)+ln(2x)=17 | | 6(y+2000)+8(y-1000)=460 | | ((11,000/5,800)1/19-1)*100 | | s^2(s+5)=0 | | 0+.6y=1 | | 24=3y-6x | | (5x-5)+(x-13)=180 | | xy+y+x=30 | | c^(3/7) | | f(-x)=2x^2+3x | | 4v-6v=v | | -2(2x-4)=6x+1 | | x^3+5x^2+2x-7=0 | | 2.5t+4.9t^2-120=0 | | 120+35x=60+35x | | 2u-2k=-4k-2u | | 4c=12+5c | | 31x-2=0 | | K^2+2k-45=0 |