EXTRA CREDIT #1 for Midterm

Front

What is the equation of the graph that represents a cosine function with a vertical stretch of 2?

Back

y = 2 cos x

Front

What is the equation of the graph that represents a sine function with a vertical stretch of 2?

Back

y = 2 sin x

Front

What is the equation of the graph that represents a sine function with a horizontal compression of 2?

Back

y = sin 2x

Front

What is the phase shift of the function y = cos(x - π/4)?

Back

π/4 to the right

Front

What is the ratio for Cosine in a right triangle?

Back

Adjacent/Hypotenuse

Front

Convert 390 degrees to radians.

Back

13π/6

Front

Which of the following graphs represent the equation y = cos2x?

Back

Graph A

Front

What is the amplitude of the function y = 3 sin x?

Back

3

Front

What is the period of the function y = sin(2x)?

Back

π

Front

What is the range of the function y = cos x?

Back

[-1, 1]