Qualification > Math

p3 problems here.!!!!

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preity:
can someone help me wit these quest...O/N 05 Q7,O/N 06 Q9,M/J 09 Q7...it's all about topic 9....helppppp....

astarmathsandphysics:
may june 2008 q2...
sub e^x=p to get p+p^=p^3 and subtract p+p^2 to get p^3-p^2-p=0
factorise p(p^2-p-1) now p=0 or solve the quadratic

astarmathsandphysics:
summer 08 qp3 q9

astarmathsandphysics:
to get -1/2 limit solve e^-x(1+2x)=0
1+2x=0 since exponentials are never 0 so x=-1/2

astarmathsandphysics:
can someone help me wit these quest...O/N 05 Q7,O/N 06 Q9,M/J 09 Q7...it's all about topic 9....helppppp....

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