The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

how many real solns to 1/5 log (base 2) x = sin (5 pi x)?  TOPIC_SOLVED

Trigonometric ratios and functions, the unit circle, inverse trig functions, identities, trig graphs, etc.
Post a reply

how many real solns to 1/5 log (base 2) x = sin (5 pi x)?

Postby theshadow on Mon May 18, 2009 5:22 pm

How many reall numbers x satsify the equation:

1/5 log (base 2) x = sin (5 pi x)?
theshadow
 
Posts: 45
Joined: Sun Feb 22, 2009 11:12 pm
Top

Sponsor

Sponsor
 
Top

Re: how many real solns to 1/5 log (base 2) x = sin (5 pi x)?  TOPIC_SOLVED

Postby maggiemagnet on Mon May 18, 2009 11:13 pm

Since they only asked you for "how many" solutions there are, you could do a graph, and count the crossings. You don't actually have to find the values. :thumb:
User avatar
maggiemagnet
 
Posts: 250
Joined: Mon Dec 08, 2008 12:32 am
Top

Re: how many real solns to 1/5 log (base 2) x = sin (5 pi x)?

Postby theshadow on Tue May 19, 2009 4:11 pm

hadnt thought of it that way :oops: :roll:
thats easier
thanks
theshadow
 
Posts: 45
Joined: Sun Feb 22, 2009 11:12 pm
Top
Post a reply

Return to Trigonometry

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!