Need to know how to work with logarithms in precalculus? You're in luck. From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with logarithms.
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How To: Remember "greater than" & "less than" symbols

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

How To: Find the area of a triangle when given 2 sides & angle

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Solve word problems involving domain and range

How To: Do long division without a calculator

How To: Prove a triangle inscribed in a circle is right angled

How To: Find the slope of a line given 2 points with fractions

How To: Do normal probability calculations on a calculator

How To: Calculate the height and volume of a pyramid

How To: Convert improper fractions to mixed numbers quickly

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

How To: Apply the 4th Law of Exponents

How To: Subtract numbers on an abacus calculator

How To: Find the average value of a function over an interval

How To: Find the Percent Given Two Numbers

How To: Figure out the domain & range of a piecewise function

How To: Find the 100th term in a sequence

How To: Find density using the water displacement method
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