exam
Maths Puzzle
Numerical Ability
if f(x)=log((1+x)/(1-x))then prove that 2f(x)=f((2x)/1+x2))
sir x2 is x squre
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exam Other Question
Given f(x)=3^x, which statement is true?
a) f(x+y)=f(x)+(y)
b) f(x+y)=f(x)f(y)
c) f(xy)=f(x)+f(y)
d) f(x/y)=f(x-y)
A cellular phone company offers a contract for which the cost C in dollars, of T minutes of telephoning is given by C = 0.25(t-300)53.95 where it is assumed that t >= 300 minutes.