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

Trigonometric ratios and functions, the unit circle, inverse trig functions, identities, trig graphs, etc.
theshadow
Posts: 100
Joined: Sun Feb 22, 2009 11:12 pm

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

Postby theshadow » 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)?

User avatar
maggiemagnet
Posts: 308
Joined: Mon Dec 08, 2008 12:32 am
Contact:

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

Postby maggiemagnet » 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:

theshadow
Posts: 100
Joined: Sun Feb 22, 2009 11:12 pm

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

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

hadnt thought of it that way :oops: :roll:
thats easier
thanks


Return to “Trigonometry”