Precal Final Review

Front

If A is a 4x3 matrix and B is a 3x3 matrix, what is the size of the product AB?

Back

The product AB is a 4x3 matrix.

Front

Back

Front

How do you find the center of an ellipse given the foci at (4,-4) and (4,6)?

Back

The center is at (4,1), which is the midpoint of the foci.

Front

What is the equation of the directrix for a parabola if a = 4?

Back

Front

What is reduced row echelon form?

Back

A matrix is in reduced row echelon form if it meets specific criteria, including leading 1s and zeros above and below each leading 1.

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 matrix.

Front

What is the significance of the foci in an ellipse?

Back

The foci are two fixed points that help define the shape of the ellipse.

Front

How do you determine the dimensions of a matrix product?

Back

The number of columns in the first matrix must equal the number of rows in the second matrix.

Front

What is the formula for the distance between two points in a coordinate plane?

Back

Front

What is the relationship between the angles in a right triangle?

Back

The sum of the angles in a right triangle is always 180 degrees, with one angle being 90 degrees.