If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
cos(55) = 0
cos(55) = 0
cos(55) = 0
t_1 = cos(55)
cos(55) = 0
t_1 = 0
x należy do R
x in (-oo:+oo)
x belongs to the empty set
tan(55) = x/13
x belongs to the empty set
| 2s+3t=36 | | y(x-3)=4y-12 | | 9x-5y=38 | | (2x-1)+(2x-1+2)=104 | | 8/9×27 | | 8x-3y=100 | | 5s+2t=35 | | X+(X*.3)=3 | | xy=336 | | -8x-24=20 | | 3x*2+2=x+4 | | 1/2x-8-3x-4=-5 | | 16x*2-4x+5=(16x*2-8x)+1 | | 16+m= | | 51=3(3+5m) | | 20-6x=8-8x | | 3+7=3(x-1) | | 3X+4+2X=49 | | 6x=1/81 | | 25x+15y=8850 | | 5a+8=38 | | -11-5a=6(5a+1) | | 9x+27=126 | | 1.3n=2.4 | | 58x+3=3(2x-4) | | -11-5a=30a+6 | | 2x+x+2-1=28 | | 8z+9=49 | | 7/x^2-7x | | 3x=27.6 | | 0.5x^2=34 | | 4(2x-1)=1/2 |