Total, marginal, and average product against units of the variable input TP peaks (MP = 0), then falls. Total product (TP) Units of the variable input Total product 0 1 2 3 4 5 6 7 8 9 10 16 MP peaks (input 2) MP = AP at AP’s maximum(input 3, both 8.0) MP = 0,TP peaks (input 7) MP negative — extra inputdestroys output (input 8+). Marginal product (MP) Average product (AP) Product per unit of input 10 8.0 Input = 2 At 2 units: total product 16 · marginal product 10 · average product 8.0 Marginal product peaks here at input 2 — beyond it,each extra unit adds less.