NC Math 4 Final Exam - v2

Front

Find x: log_5(x) = 0

Back

x = 1

Front

Sine or Cosine? Think about your coordinates on the unit circle.

Back

y = cos(x)

Front

Given matrices A (4x33) and B (33x1), what are the dimensions of the product of A times B?

Back

4x1

Front

Which formula shows the Law of Cosines?

Back

c^2 = a^2 + b^2 - 2abcos(C)

Front

log_5(25) = ?

Back

2

Front

What is the definition of a logarithm?

Back

A logarithm is the exponent to which a base must be raised to produce a given number.

Front

What is the unit circle?

Back

A circle with a radius of 1 centered at the origin of a coordinate plane.

Front

What is the Pythagorean identity?

Back

sin^2(x) + cos^2(x) = 1.

Front

What is the formula for the area of a triangle using sine?

Back

Area = 1/2 * a * b * sin(C).

Front

What is the definition of a matrix product?

Back

The product of two matrices is obtained by multiplying rows of the first matrix by columns of the second.