1. Решить уравнение.а) Cos(22x+п)= - 1б) 2(22+3) Sin2x - (22+5)Sinx+1=0 в)

1) f(х) = (31х^47 - 6х^11 + 17х^45 + 16sin (х) - 19х + 456) = (31х^47) (6х^11) + (17х^45) + (16sin (х)) (19х) + (456) = 1457х^46 - 66х^10 + 765х^44 + 16соs (х) 19.

2) f(x) = ((соs (x))^2 (sn (x))^2) = ((соs (x))^2) ((sn (x))^2) = (соs (x)) * ((соs (x))^2) (sn (x)) * ((sn (x))^2) + = -2 * (sn (x)) * (соs (x)) 2 * (соs (x)) * (sn (x)) = -4 * (sn (x)) * (соs (x)).

3) f(x) = ((x^7) (соs (x))) = (x^7) (соs (x)) = (7x^6) (-sn (x)) = (7x^6) + (sn (x)).

4) f(x) = ((-3 / 5) * x^5 2x^4 + (1 / 2) * x^2 + 15) = ((-3 / 5) * x^5) (2x^4) + ((1 / 2) * x^2) + 1(5) = ((-3 / 5) * 5 * x^4 2 * 4 * x^3 + (1 / 2) * 2 * x^1 + 0 = -3x^4 - 12x^3 +x.

5) f(x) = (x^(-3)) + 3x (соs (x))) = (x^(-3)) + (3x) (соs (x)) = (-3x^2) + 3 (-sn (x)) = (-3x^2) + 3 + (sn (x)).