Which of the following is the correct way to multiply two NumPy arrays a and b element-wise?

easy📝 Syntax Q3 of 15

SciPy - Integration with Scientific Ecosystem

Which of the following is the correct way to multiply two NumPy arrays a and b element-wise?

Anp.dot(a, b)

Ba * b

Ca @ b

Dnp.multiply(a, b.T)

Step-by-Step Solution

Solution:

Step 1: Understand element-wise multiplication
Element-wise multiplication multiplies corresponding elements of two arrays.
Step 2: Identify correct syntax
In NumPy, the operator * performs element-wise multiplication.
Step 3: Evaluate other options
np.dot(a, b) computes dot product, not element-wise multiplication.
a @ b is matrix multiplication.
np.multiply(a, b.T) multiplies a with the transpose of b, which is not element-wise unless b is 1D and transpose has no effect.
Final Answer:
a * b -> Option B
Quick Check:
Element-wise multiplication uses * operator [OK]

Quick Trick: Use * operator for element-wise multiplication [OK]

Common Mistakes:

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