Python Coding Challange - Question with Answer (01171025)

 

Step 1: Create two NumPy arrays

a = np.array([1, 2, 3])
b = np.array([4, 5, 6])

• a → [1, 2, 3]

• b → [4, 5, 6]

🔹 Step 2: Compute dot product

np.dot(a, b) performs dot product (inner product) between the two arrays.

Formula for dot product:

$$(1×4) + (2×5) + (3×6)$$

🔹 Step 3: Calculate

$$4 + 10 + 18 = 32$$

🔹 Step 4: Print result

print(np.dot(a, b))

Output:

32

✅ Final Explanation

np.dot(a, b) multiplies each corresponding element of a and b, then sums all the products — returning a single scalar value (32).

This operation is widely used in:

• Linear algebra

• Machine learning (e.g., computing weighted sums in neural networks)

• Vector mathematics

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