HOME
Course Chapters
Calculator Fundamentals
Mathematics Review
Basic Concepts
Advanced Concepts
Section Tests
Pre-test
Post-test
Useful Materials
Glossary
Online Calculators
Redox Calculator
Kinetics Arrhenius Calculator
Thermodynamics Calculator
Nuclear Decay Calculator
Linear Least Squares Regression
Newton's Method Equation Solver
Compressibility Calculator
Units Conversion Calculator
Nomenclature Calculator
Related Information Links
Texas Instruments Calculators
Casio Calculators
Sharp Calculators
Hewlett Packard Calculators
Credits
Contact Webmaster
|
Problem 2 Solution
2.076923077
The key idea:
The order of operations may need to be emphasized again, especially the proper
use of parentheses to evaluate the denominator correctly.
Solution Steps for Problem 2:
Answer:
- Recall the order of operations is Parentheses, Exponentiation, Multiplication or Division, Addition or Subtraction.
- One "tricky" part was covered in "Working with Numbers:"
-1^2 is evaluated as -1, since the exponentiation is done before the negation.
- Another step that you might miss is putting the denominator inside parentheses, since 3^2 is divided by the WHOLE denominator.
- Entering the following key strokes in a T1-82 style calculator produces the answer:
3 ^ 2 / ( 1 + ( 22 / 3 + 4 * ( - 1 ^ 2 ) ) ) ENTER
Answer: 0.729730
Try another problem like this one.
|