Course Chapters

Calculator Fundamentals

Mathematics Review

• Numbers and their Properties
  
• Numbers in Science
  
• Ratios and Proportions
  
• Units, Dimensions and Conversions
  
• Percents
  
• Simple Statistics
  
• Logarithms
  

Basic Concepts

Advanced Concepts

Pre-test

Post-test

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

Texas Instruments Calculators

Casio Calculators

Sharp Calculators

Hewlett Packard Calculators

The first step is to simplify:
7 = ln5x + ln5x
7 = 2ln5x
3.5 = ln5x
Now we try to eliminate the ln from the equation so we raise everything to the e power.
e^3.5 = e^ln5x
By the identity rule, e^ln5x is equal to 5x
5x = e^3.5
5x = 33.1
x = 6.62