Logarithmic function:solve for x: 4 log x2, Mathematics

Assignment Help:

Solve for x: 4 log x = log (15 x2 + 16)

Solution:              x4 - 15 x2 - 16 = 0

               (x2 + 1)(x2 - 16) = 0

               x = ± 4

  But log x is not described when x = - 4, the x = 4 is the only answer.

 

 


Related Discussions:- Logarithmic function:solve for x: 4 log x2

Last year a math textbook cost $54 what is this years cost, Last year, a ma...

Last year, a math textbook cost $54. This year the cost is 107 percent of what it was last year. What is this year's cost? a. $59.78 b. $57.78 c. $61.00 d. $50.22 To ?nd out

Write down the equation of the line, Write down the equation of the line wh...

Write down the equation of the line which passes through the points (2, -1, 3) and (1, 4, -3).  Write all three forms of the equation of the line. Solution To do the above

Help, how do i know what operation to use in a fraction word problem

how do i know what operation to use in a fraction word problem

Spurious correlations, Spurious Correlations - in several rare situati...

Spurious Correlations - in several rare situations when plotting the data for x and y we may have a group indicating either positive correlation or negative (-ve) correlation

Algebraic expression, i dont understand what my teacher disccussing thats w...

i dont understand what my teacher disccussing thats why i want to learn for this lesson. i want to ask'' what is the variables?

Distance and Section Formulae, find the coordinates of points of tri-sectio...

find the coordinates of points of tri-section of the line joining the points (-3,0) and (6,6).

Randomly chosen boy can run this race in 302 sec, School run known to posse...

School run known to possess normal distribution with mean 440 sec & SD 60 sec. What is probability that randomly chosen boy can run this race in 302 sec.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd