(b) Draw a demand curve illustrating price inelastic demand from customers and clarify how the curve pertains to the definition of cost elasticity of demand from customers. Algebra，actuarial science，calculus，differential equations，discrete math，econometrics，finite math，geometry，linear algebra，logic，prealgebra，precalculus，probability，stats，trigonometry 并不一定是说新秀机... https://socialinplace.com/story971391/the-best-side-of-paper%E4%BB%A3%E5%86%99