The exact value for cos(pi/16) would be :
cos (pi/16) = +/- √1+cosa/2
cos (pi/4) = sqrt2/2
Hope this helps
The discontinuities are x=-4. Because it is a fraction, you cannot divide by zero so if the denominator is set to equal zero, which it will if x=-4, the function will be be undefined
40 x 6 + 16 =
= 240 + 16 =
= 256
256 / 40 = 6 with a remainder of 16
Hope I helped.
First is pears ,next is apple, and the last is oranges. 3,900, 3800, 3500. I hope that this helps.