Question

Find all roots, both real and complex, of the following polynomials. When appropriate, given the multiplicity of the root. 11. 2x3 + - 4x +1 12. 8x4 + 4x3 - 6x2 – 5x - 1 13. 3x3 + 9x2 +2+3 14.24 +223 +222? + 50c - 75 15. Find the amplitude, frequency, and period of the function f (t) = 4 sin(2t + 7).

Answer 1

2x3 +x?_44+1=0 x= 1 is a knot of this equ 12 23 T3 - To (x-1)(3x? +32-1) = 0 (6-1) [ 2x*+2144 X -1) = 0 (x-1) [ Qx (1+1CX-1] = 0 (C-1) 2 = -339.- 4x–14.2 - 2x2 x=19 -3 + 17 X=1, -37317 1 -3-47