Questions tagged 'cosine function'
2 questions
Which is the best of the following polynomial approximations to cos 2x near x=0?
Could someone explain how to solve this problem? Which of the following polynomial approximations is the best fit for cos(2x) near x = 0? a) 1 + x/2 b) 1 + x c) 1 - 2x + x² d) 1 - (1/2)x² e) 1 - 2x²
Trig Question! True or False?
Reflecting the graph of y = cos(x) across the y-axis results in a graph that is identical to the original. Is this statement true or false?