NumPy - Broadcasting
Which of the following is the correct syntax to multiply a NumPy array
arr by scalar 3 using broadcasting?Which of the following is the correct syntax to multiply a NumPy array arr by scalar 3 using broadcasting?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify correct multiplication syntax
NumPy arrays support element-wise multiplication with scalars using the * operator.Step 2: Check options
arr * 3 uses correct syntax. A requires np.multiply qualification, B is invalid method, D causes shape mismatch error.Final Answer:
arr * 3 -> Option BQuick Check:
Scalar multiplication syntax = arr * scalar [OK]
Quick Trick: Use * operator to multiply array by scalar [OK]
Common Mistakes:
- Using invalid methods
- Multiplying by mismatched list
- Confusing function names
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