(A) 6 (B) 5 (C) 4 (D) 3

यदि | a→|=3, |b|→=4 एवं 1a→-b→=5, then |a→+b→|=?

Mathematics » Algebra

यदि $| \vec{a} | = 3, | \vec{b |} = 4$ एवं $1 (\vec{a} - \vec{b}) = 5, t h e n | \vec{a} + \vec{b} | = ?$