Need help with this exponential equation.  TOPIC_SOLVED

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.

Need help with this exponential equation.

Postby rogermiranda on Sat Jun 12, 2010 2:31 pm

The equation is x(raised to the one-half) - 6x(raised to the negative one-half) - 5 = 0
x^(1/2) - 6x^(-1/2) - 5 = 0
At this point what I tried to do was change it to a square root. So I get this
sqr of x + sqr of 6x - 5 = 0 At this point I am confused and stuck. Please help. By the way the answer is x = 36
rogermiranda
 
Posts: 19
Joined: Fri Apr 30, 2010 6:01 pm

Sponsor

Sponsor
 

Re: Need help with this exponential equation.  TOPIC_SOLVED

Postby Martingale on Sat Jun 12, 2010 3:47 pm

rogermiranda wrote:The equation is x(raised to the one-half) - 6x(raised to the negative one-half) - 5 = 0
x^(1/2) - 6x^(-1/2) - 5 = 0
At this point what I tried to do was change it to a square root. So I get this
sqr of x + sqr of 6x - 5 = 0 At this point I am confused and stuck. Please help. By the way the answer is x = 36





multiply by

get



let

then you get



now solve for and then determine
User avatar
Martingale
 
Posts: 350
Joined: Mon Mar 30, 2009 1:30 pm
Location: USA


Return to Advanced Algebra ("pre-calculus")

cron