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cos(4*x)
cos(4*y)
-5;2;2;1;0;0
-7;2;2;1;0;0
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| 7x^2=-24+19x | | 75=3x+13+4x-8 | | (a^4b^-3/ab^-2)^-3 | | -8p+8=-10-10p | | 20-17=5-2 | | (a+1)(a-1)-2(a-1)= | | 81.4=x-37.25 | | -1/2(x-4)=1 | | t^4-4t^2=3 | | (10x^2y^4/45x^7y^-3)^-2 | | 7x+10-4x=24-x | | X^2+42=400 | | S-1/3=5/6 | | 39-3n=6(4n-3) | | a(2+x)-(2+x)= | | f(x+3)=2x-4 | | 10j-9j=15 | | 6v=v+40 | | (a^2+1)-b(a^2+1)= | | 7b-9x+3a-12= | | 3696x-1364=44(84x-31) | | 2x+21=-9 | | x=cos-5/3 | | 7/2y=42-22x | | 5x-3(x-5)=-8+5x+14 | | 53=a^3+b^3+c^3 | | 9x-7i=3(3i-7u) | | 54=a^3+b^3+c^3 | | 29=a^3+b^3+c^3 | | x^3+6x^2-5x-22=0 | | a(a+b)-b(a+b)= | | y=0.7x+0.6 |