Product Quantity Subtotal Introduction to Fourier Optics $19.95 2 × $19.95 2 $39.90 Practical Statistics for Data Scientists: 50+ Essential Concepts Using R and Python $17.49 1 × $17.49 1 $17.49 Machine Learning: An Applied Mathematics Introduction $17.00 1 × $17.00 1 $17.00 Update cart Cart totals Subtotal $74.39 Total $74.39 Proceed to checkout — or —