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)
((cos(6.5))^6)/x = 0
(cos(6.5))^6*x^-1 = 0 // : (cos(6.5))^6
x^-1 = 0
x należy do O
x belongs to the empty set
| 2(x+2.5)=21 | | 4j-4=g | | 3y-1=35-3y | | 8y=12-2x | | 30+k=53 | | -9x+5x+3x=55 | | -2b+4b^2= | | 6p+8=j | | f-15=23 | | x/4-9=17 | | 9r-4r-4r-1=17 | | a-2.5=18.5 | | 6p+12=o | | 5-g=4 | | y-2.5=-9 | | 3s^2+20=7 | | 7x^2-1x-6=0 | | 7p-5=8p-6 | | -2x-4+6x=44 | | (343)x=(49)4-x | | 12z-10z-2=8 | | c-15=31 | | 2x+8-(2x+8)=0 | | 18t-18t+t=7 | | 10+k=15 | | 4xn=60 | | 6x^2+7x-75=0 | | -6x-8+5x=-3 | | a+30=34 | | M^2-3m-26=0 | | 20+s=67 | | 8y+96=100 |