Brightstorm explains how to use definite integrals to find area. There are two basic area problems: one in which the area lies between the function and the xaxis, and one where the area lies between the two functions. In the first case, if the curve lies above the xaxis for x=a to x=b, the definite integral returns the area. If it lies below the xaxis for x=a to x=b, then the definite integral returns a negative area. In the second case, we assume that f(x) is the higher curve and g(x) is the lower one. The area then is the area under y=f(x) minus the area under y=g(x). When taken as definite integrals, those can be combined as the integral from x=a to x=b of f(x)g(x). This simplifies the problem to a single integral of the difference of the two functions.
 Hot
 Latest

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Calculate Faster Than a Calculator

How To: Do long division without a calculator

How To: Remember "greater than" & "less than" symbols

How To: Find a number given Its percent

How To: Calculate the area of a parallelogram

How To: Find the Slope Given 2 Ordered Pairs

How To: Calculate percent composition for chemistry

How To: Write a sum/difference of logarithms as a logarithm

How To: Calculate math without a calculator

How To: Reduce fractions to their lowest terms

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Convert between diameter and radius

How To: Find a missing coordinate given: coordinate & equation

How To: Find the area of a circle when you know the diameter

How To: Solve percentages without a calculator

How To: Find the LCM & GCF of a number set with a Venn diagram

How To: Divide small numbers by big numbers

How To: Express a ratio as a fraction in simplest form

How To: Find the Percent Given Two Numbers

How To: Find a missing side of a triangle, similar to another

How To: Calculate Faster Than a Calculator

How To: Do long division without a calculator

How To: Remember "greater than" & "less than" symbols

How To: Find a number given Its percent

How To: Calculate the area of a parallelogram

How To: Find the Slope Given 2 Ordered Pairs

How To: Calculate percent composition for chemistry

How To: Write a sum/difference of logarithms as a logarithm

How To: Calculate math without a calculator

How To: Reduce fractions to their lowest terms

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Convert between diameter and radius

How To: Find a missing coordinate given: coordinate & equation

How To: Find the area of a circle when you know the diameter

How To: Solve percentages without a calculator

How To: Find the LCM & GCF of a number set with a Venn diagram

How To: Divide small numbers by big numbers

How To: Express a ratio as a fraction in simplest form
Be the First to Comment
Share Your Thoughts