Find the equation of the line of best fit for the data: (4, 3), (6, 4), (8, 9), (11, 12), (13, 17). Round the slope and y-intercept to 3 decimal places.
Find the values of c1,c2,c3 such that g(x)=c1cos(2x)+c2+c3cos2(x)=0 for all x∈(−∞,∞). If a nontrivial solution exists, state it, otherwise enter the trivial solution {0,0,0}.