Compare prices and save on cheap textbooks at CheapestTextbooks.com

Signup for 'Amazon Student'

Gathering data for you

Our Price Comparison is FREE to use. You are moments away from:

Buy, Rent or Sell
New, Used, Rental, eBooks
Finding the Cheapest Prices
Saving up to 95%

Check out

our fan page on

facebook

for additional ways to save.

Approximation Theory and Approximation Practice, Extended Edition

Approximation Theory and Approximation Practice, Extended Edition

: Hardcover
Edition:: Extended
Author:: Lloyd N. Trefethen
Publisher:: SIAM - Society for Industrial and Applied Mathematics
Release Date:: 2019
ISBN-10:: 161197593X
ISBN-13:: 9781611975932
List Price:: $68.26

Cheapest Price Summary Buy From $68.19

New: $68.19

eCampus

Price:: $68.19
Shipping:: $0.00
Total:: $68.19

Buy Nowclick here!

Rent From $45.62

Semester Rental: $50.69

Knetbooks

Price:: $50.69
Shipping:: $0.00
Total:: $50.69

Rent Nowclick here!

55 Day Rental: $45.62

Knetbooks

Price:: $45.62
Shipping:: $0.00
Total:: $45.62

Rent Nowclick here!

Cheapest Price Summary
Store		Condition	Coupons & Deals	Price	Shipping	Total
	eCampus New	New	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$68.19 as of 4 seconds ago	FREE	$68.19 $68.19Buy Nowclick here!
	Knetbooks Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)		$50.69 as of 4 seconds ago	FREE	$50.69 26% off $50.69Rent Nowclick here!
	Knetbooks 60 Day Rental (Due Date 06/06/2026)	60 Day Rental (Due Date 06/06/2026)		$45.62 as of 4 seconds ago	FREE	$45.62 33% off $45.62Rent Nowclick here!

All Used New Rent eBook Sell Back

Buy it new for as low as $68.19
Store		Condition	Coupons & Deals	Price	Shipping	Total
	eCampus New	New	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$68.19 as of 3 seconds ago	FREE	$68.19 $68.19Buy Nowclick here!
	Amazon New	New	$ Amazon coupon(s) Details: Get FREE 2-day shipping Restrictions: Must provide your school and major, CLICK HERE Coupon Code: no code needed Details: Get FREE Shipping with a $25+ purchase Restrictions: Spend over $25, see Amazon for details. Coupon Code: no code needed	$66.00 as of 4 seconds ago	$3.99 FREE, with $25 purchase	$69.99 3% off $69.99Buy Nowclick here!

Semester Rental for as low as $50.69
Store		Condition	Coupons & Deals	Price	Shipping	Total
	Knetbooks Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)		$50.69 as of 4 seconds ago	FREE	$50.69 26% off $50.69Rent Nowclick here!
	eCampus Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$51.20 as of 3 seconds ago	FREE	$51.20 25% off $51.20Rent Nowclick here!
	BiggerBooks Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)	$ BiggerBooks coupon(s) Details: Get FREE Shipping with a $59+ purchase Restrictions: Must spend $59+ Coupon Code: no code needed	$52.74 as of 4 seconds ago	$4.99 FREE, with $59 purchase	$57.73 23% off $57.73Rent Nowclick here!

55 Day Rental for as low as $45.62
Store		Condition	Coupons & Deals	Price	Shipping	Total
	Knetbooks 60 Day Rental (Due Date 06/06/2026)	60 Day Rental (Due Date 06/06/2026)		$45.62 as of 3 seconds ago	FREE	$45.62 33% off $45.62Rent Nowclick here!
	eCampus 60 Day Rental (Due Date 06/06/2026)	60 Day Rental (Due Date 06/06/2026)	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$46.08 as of 3 seconds ago	FREE	$46.08 32% off $46.08Rent Nowclick here!
	Knetbooks 80 Day Rental (Due Date 06/26/2026)	80 Day Rental (Due Date 06/26/2026)		$48.15 as of 3 seconds ago	FREE	$48.15 29% off $48.15Rent Nowclick here!
	eCampus 80 Day Rental (Due Date 06/26/2026)	80 Day Rental (Due Date 06/26/2026)	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$48.64 as of 3 seconds ago	FREE	$48.64 29% off $48.64Rent Nowclick here!
	BiggerBooks 60 Day Rental (Due Date 06/06/2026)	60 Day Rental (Due Date 06/06/2026)	$ BiggerBooks coupon(s) Details: Get FREE Shipping with a $59+ purchase Restrictions: Must spend $59+ Coupon Code: no code needed	$47.46 as of 4 seconds ago	$4.99 FREE, with $59 purchase	$52.45 30% off $52.45Rent Nowclick here!
	BiggerBooks 80 Day Rental (Due Date 06/26/2026)	80 Day Rental (Due Date 06/26/2026)	$ BiggerBooks coupon(s) Details: Get FREE Shipping with a $59+ purchase Restrictions: Must spend $59+ Coupon Code: no code needed	$50.10 as of 4 seconds ago	$4.99 FREE, with $59 purchase	$55.09 27% off $55.09Rent Nowclick here!

Best Buying and Renting Options - Total includes shipping
Store		Condition	Coupons & Deals	Price	Shipping	Total
	Knetbooks Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)		$50.69 as of 4 seconds ago	FREE	$50.69 26% off $50.69Rent Nowclick here!
	eCampus Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$51.20 as of 3 seconds ago	FREE	$51.20 25% off $51.20Rent Nowclick here!
	BiggerBooks Semester Rental (Due Date 07/31/2026)	Semester Rental (Due Date 07/31/2026)	$ BiggerBooks coupon(s) Details: Get FREE Shipping with a $59+ purchase Restrictions: Must spend $59+ Coupon Code: no code needed	$52.74 as of 4 seconds ago	$4.99 FREE, with $59 purchase	$57.73 23% off $57.73Rent Nowclick here!
	eCampus New	New	$ eCampus coupon(s) Details: Get FREE Shipping with a $35+ purchase Restrictions: Must spend $35+ Coupon Code: no code needed	$68.19 as of 3 seconds ago	FREE	$68.19 $68.19Buy Nowclick here!
	Amazon New	New	$ Amazon coupon(s) Details: Get FREE 2-day shipping Restrictions: Must provide your school and major, CLICK HERE Coupon Code: no code needed Details: Get FREE Shipping with a $25+ purchase Restrictions: Spend over $25, see Amazon for details. Coupon Code: no code needed	$66.00 as of 4 seconds ago	$3.99 FREE, with $25 purchase	$69.99 3% off $69.99Buy Nowclick here!

This book is not available for: Used, 85 Day Rental, eBook, Sell Back

© CheapestTextbooks.com 2001-2026. All rights reserved.