AEM 249 Lecture 19

Which of the following is a logical function in NumPy that tests whether all array elements along a given axis evaluate to True?

• np.logical_and(a, b)

• np.isfinite(a)

• np.linalg.matrix_power(a, n)

• np.allclose(a, b, tol)

What does the @ operator do in NumPy?

• Performs matrix addition

• Performs element-wise multiplication

• Performs matrix multiplication

• Performs element-wise addition

Which function in NumPy is used to calculate the matrix or vector norm?

• np.linalg.det(a)

• np.linalg.matrix_power(a, n)

• np.linalg.norm(a)

• np.linalg.inv(a)

What does the np.logical_xor(a, b) function in NumPy do?

• Compute the truth value of a and b element-wise

• Compute the truth value of a or b element-wise

• Compute the truth value of not a element-wise

• Compute the truth value of a exclusive or b element wise

Which function in NumPy is used to calculate the determinant of an array?

• np.linalg.inv(a)

• np.linalg.det(a)

• np.linalg.matrix_power(a, n)

• np.linalg.norm(a)

What does the np.isinf(a) function in NumPy do?

• Test element-wise for negative infinity

• Test element-wise for positive or negative infinity

• Test element-wise for NaN

• Test element-wise for finiteness

Which function in NumPy is used to calculate the inverse of a matrix?

• np.linalg.det(a)

• np.linalg.inv(a)

• np.linalg.matrix_power(a, n)

• np.linalg.norm(a)

What does the np.any(a) function in NumPy do?

• Test whether all array elements along a given axis evaluate to True

• Test whether any element along a given axis evaluates to True

• Test element-wise for finiteness

• Test element-wise for positive or negative infinity

Which function in NumPy is used to raise a square matrix to the integer power n?

• np.linalg.inv(a)

• np.linalg.matrix_power(a, n)

• np.linalg.norm(a)

• np.linalg.det(a)

What does the np.isposinf(a) function in NumPy do?

• Test element-wise for positive infinity

• Test element-wise for negative infinity

• Test element-wise for NaN

• Test element-wise for finiteness