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2*cos((pi/4)*x) = 0
sin(2*x)
54;82
460;36
6;1.75
| 6.8x=27.88 | | -5y+-3=15+-2y | | 25p-20x=15x+5x+50 | | 2cos(pi/4*x) | | x-8=-63+6x | | (7a+2)=8 | | -5x-6=5x-106 | | 7x+3=x+3 | | -2a+b=7 | | 1+4x=-x-59 | | 16-4x=0 | | 14l-100=34l-50 | | 4x^2+2x-1+-2x+5= | | (x*0.05)+x=28.14 | | 6x-8=4x-4 | | z^2+16z+49=0 | | 15k-13=10h-11 | | 1/3log25x=2 | | In(x-6)+4=nix+3 | | 30=6-6x | | 14r-7r=16h+14-16h | | d/8=6.2 | | x=sin-1(0.72) | | 4x-8-30=9x-3 | | 112/28 | | 4(2x-3)-4x+2=x+20 | | 49/21n | | -12c+s-9(11-c)= | | (1/2)3x=8(2) | | 2on(6x)=6 | | x-10=4x+2 | | 5z+21=7z+43 |