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math in hl HELP

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astarmathsandphysics:
if tan5x=0 x=tan^-10= pi/5
0=(5tanp-10tan^3 p +tan^5 p)=tanp(5 -10tan^2 p+tan^4 p)
hence solve t^2-10t+5=0 where t=tan^2 p and p=pi/5

cooldude:

--- Quote from: A@di on September 07, 2009, 02:30:00 pm ---wats GP

--- End quote ---


geometric progression

IGSTUDENT:

--- Quote from: astarmathsandphysics on January 23, 2010, 11:09:14 am ---if tan5x=0 x=tan^-10= pi/5
0=(5tanp-10tan^3 p +tan^5 p)=tanp(5 -10tan^2 p+tan^4 p)
hence solve t^2-10t+5=0 where t=tan^2 p and p=pi/5

--- End quote ---

thanks a lot

sweet777:
can u please help me solve this matrix question??

Write 5A2-6A=3I in the form AB=I and hence find A-1 in terms of A and I

please help fasssssssssttttttttttttt!!!!!!!!!!!!!!!!!!!!!!!

Alpha:

--- Quote from: A@di on September 07, 2009, 02:30:00 pm ---wats GP

--- End quote ---


Geometric Progression, I guess.

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