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(x/3) = 0
cos(x/3) = 0
cos(x/3) = 0
cos(x/3) = 0 <=> x/3 = pi*k_1+pi/2 i k_1 należy do I
t_1 = pi*k_1+pi/2
x/3-t_1 = 0
1/3*x-t_1 = 0 // + t_1
1/3*x = t_1 // : 1/3
x = t_1/1/3
x = 3*t_1
x = 3*pi*k_1+pi/2 i k_1 należy do I
x in {( -oo : +oo ) / < 3*pi*k_1+pi/2 : 3*pi*k_1+pi/2 >} i k_1 -> {I}
9*tan(x/3) = 0
tan(x/3) = 0
tan(x/3) = 0 <=> x/3 = pi*k_1 i k_1 należy do I
t_1 = pi*k_1
x/3-t_1 = 0
1/3*x-t_1 = 0 // + t_1
1/3*x = t_1 // : 1/3
x = t_1/1/3
x = 3*t_1
x = 3*pi*k_1 i k_1 należy do I
9*tan(x/3) = 0 <=> 9 = 0 or 9*tan(x/3) = 0 <=> tan(x/3) = 0
x = 3*pi*k_1
| 3x+-2y+12=0 | | 5/6g-1/7g=9 | | P+p+35=635 | | 4(w-5)-7w= | | 2/5-7/20f=1/4 | | 20x+16y=6000 | | -2c+6=8 | | 110=v/5 | | x=-22/7 | | X^3-13x^2+15x-189=0 | | 7x+21=-1 | | 17=6.9-x | | 13.1=17.9+x | | 4r+5(5r-5)=17 | | 4x-9-22x=7x-4 | | 5x+y=5xy | | 5x^2+26x+21=0 | | 11.6=x-7.9 | | 5.2a+15=61.8 | | 14x+4y=90 | | 11x-4=3x-28 | | x/8=2.7 | | 6x=9x-8 | | -17x+7y=11 | | -3(5-9v)=25+7b | | x^2+m(4x+m-1)+2=0 | | mx^2+m(4x+m-1)+2=0 | | X=-3a+b | | 5r=300 | | f(x)=5x^4-8x+3 | | 5/8-1/4/4/7= | | 15.60+3s=24.75+6s |