Evaluate log function, Algebra

Example   Evaluate log5 7 .

Solution

At first, notice that we can't employ the similar method to do this evaluation which we did in the first set of instance. It would need us to look at the following exponential form,

                                                           5?  = 7

and that's only not something which anyone can answer off the top of their head.  If the 7 had been a 5, or a 25, or a 125, etc. we could do this, however it's not. Thus, we need to use the change of base formula.

Now, we can utilize either one & we'll get the similar answer.  Thus, let's use both & verify that. We'll begin with the common logarithm through of the change of base.

 

log5  7 = log 7/ log 5 = 0.845098040014/0.698970004336 = 1.20906195512

Now, let's attempt the natural logarithm form of the change of base formula.

log5  7 = log 7/ log 5 = 1.94591014906 /0.698970004336 = 1.20906195512

So, we got the same answer despite the fact that the fractions involved different answers.

Posted Date: 4/8/2013 3:24:24 AM | Location : United States







Related Discussions:- Evaluate log function, Assignment Help, Ask Question on Evaluate log function, Get Answer, Expert's Help, Evaluate log function Discussions

Write discussion on Evaluate log function
Your posts are moderated
Related Questions
This is my question I need help with: The ratio of adult dogs to puppies at a park on Monday was 3:2. There are 12 puppies there that day. Tuesday, 15 adult dogs were at the park.


changing of binary to hexadecimal

The record high temperature for Asheville, North Carolina was 99 degree Fahrenheit. The low record was -17 degrees Fahrenheit. What is the difference between these two temperatures

how to expand when asked to divide, multiply etc

if A is an ideal and phi is onto S,then phi(A)is an ideal.

answer in scientific notation correct to the ten thousandths 471,598,000,000

Solve a quadratic equation through completing the square Now it's time to see how we employ completing the square to solve out a quadratic equation. The procedure is best seen

(x^6-13x+42)/(x^3-7)

how much is 101+200+