Product Quantity Subtotal Mathematics for Electricity & Electronics $19.99 1 × $19.99 1 $19.99 Introduction to Fourier Optics $19.95 1 × $19.95 1 $19.95 Large Language Models: A Deep Dive: Bridging Theory and Practice $15.99 1 × $15.99 1 $15.99 What's the Point of Math? (DK What's the Point of?) $8.95 1 × $8.95 1 $8.95 Update cart Cart totals Subtotal $64.88 Total $64.88 Proceed to checkout — or —