Exponential Equation Formula - Understanding and Solving Guide

Last Updated on Jul 31, 2023
Download As PDF
IMPORTANT LINKS

The Basics of Exponential Equation Formulas

Exponential equations are a unique category of mathematical equations where both sides can be represented using the same base. This is achieved by utilizing properties of exponents. These equations are frequently used in various fields such as calculating compound interest, tracking population growth, and determining the rate of radioactive decay.

The general form of an exponential equation is as follows:

\[\large y=ab^{x}\]

In this equation,
x and y are variables,
while a and b are constants.

Example for Better Understanding

Example 1: Determine the value of x in the equation: 3 2x – 7 = 81 x

Solution:

Given,
3 2x – 7 = 81 x

81 can be expressed as a power of 3:
3 2x – 7 = 3 4(x) = 3 4x
Here, since the bases are the same, we can equate the exponents:
2x – 7 = 4x
⇒ 4x – 2x = 7
⇒ x = 7/2 = 3.5
More Articles for Maths Formulas

Frequently Asked Questions

An exponential equation is a special type of equation in which each side can be expressed in terms of the same base and can be solved using the property of exponents. It is used to express a graph in many things like radioactive decay, compound interest, population growth etc.

The exponential equation will be of the form: y = ab^x, where x and y are variables and a and b are constants.

To solve an exponential equation, express each side in terms of the same base and then equate the exponents. For example, to solve 5^(3x – 8) = 25^(2x), express 25 as a power of 5 and equate the exponents to solve for x.

UGC NET/SET Course Online by SuperTeachers: Complete Study Material, Live Classes & More

Get UGC NET/SET SuperCoaching @ just

₹25999 ₹8749

Your Total Savings ₹17250
Explore SuperCoaching
Test Series
4.7k Students
MH-SET Mock Test Series 2025
166 TOTAL TESTS | 1 Free Tests
  • 29 Full Test
  • 47 Previous Year Paper
  • 90 Unit Test

Get Started
Report An Error