Logarithms – Rules Video Lecture | Logarithms Simplified (Mathematics Trick): Important for K12 students - Quant

9 videos
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Video Timeline
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00:00 Introduction
00:08 First Rule - Logarithmic Addition Identity
00:44 Second Rule - Logarithmic Subtraction Identity
01:06 Third Rule - Logarithm Power Rule
01:59 Rules of Logarithms (Examples)
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FAQs on Logarithms – Rules Video Lecture - Logarithms Simplified (Mathematics Trick): Important for K12 students - Quant

1. What are the basic rules of logarithms?
Ans. The basic rules of logarithms include the product rule, quotient rule, power rule, change of base rule, and the logarithm of 1 rule. These rules help simplify logarithmic expressions and solve logarithmic equations.
2. How does the product rule of logarithms work?
Ans. The product rule of logarithms states that the logarithm of a product is equal to the sum of the logarithms of the individual factors. In other words, if we have log base b of a multiplied by c, it can be written as the sum of log base b of a plus log base b of c: logb(ac) = logb(a) + logb(c).
3. Can you explain the quotient rule of logarithms?
Ans. The quotient rule of logarithms states that the logarithm of a quotient is equal to the difference of the logarithms of the numerator and denominator. In other words, if we have log base b of a divided by c, it can be written as the difference of log base b of a minus log base b of c: logb(a/c) = logb(a) - logb(c).
4. How does the power rule of logarithms work?
Ans. The power rule of logarithms states that the logarithm of a number raised to a power is equal to the product of that power and the logarithm of the number. In other words, if we have log base b of a raised to the power of n, it can be written as n times log base b of a: logb(a^n) = n * logb(a).
5. What is the change of base rule of logarithms?
Ans. The change of base rule of logarithms allows us to evaluate logarithms with any base using logarithms with a different base. It states that the logarithm of a number with base a can be expressed as the logarithm of the same number with base b divided by the logarithm of a with base b. In other words, if we have log base a of x, it can be written as log base b of x divided by log base b of a: loga(x) = logb(x) / logb(a).
Video Timeline
Video Timeline
arrow
00:00 Introduction
00:08 First Rule - Logarithmic Addition Identity
00:44 Second Rule - Logarithmic Subtraction Identity
01:06 Third Rule - Logarithm Power Rule
01:59 Rules of Logarithms (Examples)
More
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