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math in hl HELP

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astarmathsandphysics:


try this

IGSTUDENT:
thanks a lot astar.
your answer also matches but the textbook has the question as (1+ square root of (3i) )the whole cube. could that be  a misprint?

astarmathsandphysics:
Yes a misprint

sweet777:

--- Quote from: nid404 on September 07, 2009, 03:51:01 pm ---LHS

1-sinx/cosx

multiply by 1+sinx/1+sinx...this only to get the value in the denominator...we're actually not changing anything u see cause 1+sinx/1+sinx=1

so
1-sin2x/cosx(1+sinx)
u know that
1-sin2x=cos2x
so
cos2x/cosx(1+sinx)
cancel the cosx from top and bottom
cos2x/cosx(1+sinx)
cosx/1+sinx

hope u got it


was answered by astar...
but...nevertheless...ur answer wud suit him..



astar equated it...and he/she replied that you need to use only LHS....so i thought this might help


--- End quote ---

thanks for the answer....i wanted the LHS = RHS method......thanks a ton!!!!

sweet777:
if a question is given:
let g(x) = log5|2log3x|. Find the product of the zeros of g.

How do you solve this question?i dont even understand what this question means!...

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