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Maths Puzzle
Numerical Ability
2 cos phi multiply csc 2phi = csc phi: prove the identity.
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book Other Question
Twice the greater of two consecutive odd intgers is 13 less than three times the lesser. Find the integers.
zeros of a function:
find the zeros (i.e. x-intercepts) of the following functions:
1) f(x)=-48x^2+3x^4
2) f(x)=-4x^3-15x^2+18x