MATH 4 - Final Exam Review #2

Front

What is the amplitude of a cosine function?

Back

The amplitude of a cosine function is the maximum distance from the midline of the graph to its peak. It is determined by the coefficient in front of the cosine function.

Front

What is the amplitude of the function y = 2 cos X?

Back

The amplitude is 2.

Front

What is the amplitude of the function y = 7.5 sin 2x?

Back

The amplitude is 7.5.

Front

What is the difference in amplitude between y = 2 cos X and y = 7.5 sin 2x?

Back

The difference is 5.5 (7.5 - 2).

Front

In which mode should you set your calculator to input π?

Back

You need to set your calculator to Radian mode.

Front

What is the value of f when x equals 4 if f(x) = 3?

Back

f(4) = 3.

Front

How do you calculate combinations for selecting groups?

Back

Use the formula nCr = n! / (r!(n-r)!) where n is the total number of items and r is the number of items to choose.

Front

How many groups of 3 can be formed from a committee of 15 people?

Back

15 NCR 3.

Front

What is the probability of picking a red or blue marble from a jar containing 2 pink, 6 red, and 4 blue marbles?

Back

The probability is 5/6.

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).