SOLUTION: Solve the logarithmic equation algebraically. Show steps
log(64)1/4=x
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Question 689697: Solve the logarithmic equation algebraically. Show steps
log(64)1/4=x
Found 2 solutions by jsmallt9, MathTherapy:
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
The expression on the left represents the exponent for 64 that results in 1/4. If you are really sharp with your exponents you will already know what this exponent is. If not then we can use the change of base formula, , to convert the base 64 log into a log with a different base. This different base should be one that will make it easy to figure out the value of the log. With an argument of 1/4 a base of 4 looks good. Using the change of base formula to change to base 4 logs we get:
After checking various powers of 4 you should know what these two logs are. The power of 4 that equals 1/4 is -1 and the power of 4 that equals 64 is 3. So our expression simplifies to:
P.S. Look back at the original expression. See if you can understand why
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
Solve the logarithmic equation algebraically. Show steps
log(64)1/4=x
3x = - 1 ------ As bases are the same, so are their exponents
You can do the check!!
Send comments and “thank-yous” to “D” at MathMadEzy@aol.com
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