I'm reading this book:
trying to find out what is "Integral Quadrature". here is a snapshot of the page which is about Integral Quadrature:
My questions is what are w(weighting coefficiont) and f(functional value) and could you please show me them on the figure 1.1?
It's so close to the concept of "Integration" which we learnt at school but I don't know why it make me crazy. this is what we learnt about integrating at school:
P.S. I don't have enough reputation to add these tages: "Integral Quadrature" and "Differential Quadrature" would you please do it for me?