element-wise multiplication of two vectors in c++

Question

I am trying to do the following mathematical operation with two vectors:

v1 = [a1][a2][a3][a4][a5]
v2 = [b1][b2][b3][b4]b5]

Want to compute:

Answer 1

You could look into std::valarray. It's designed to allow mathematical operations on every element in the array.