Question

The formula `(vec"a" + vec"b")^2 = vec"a"^2 + vec"b"^2 + 2vec"a" xx vec"b"` is valid for non-zero vectors `vec"a"` and `vec"b"`

विकल्प

• True

• False

Answer 1

This statement is False.

Explanation:

 `(vec"a" + vec"b")^2 = (vec"a" + vec"b") * (vec"a" + vec"b")`

= `|vec"a"|^2 + |vec"b"|^2 + 2vec"a" * vec"b"`