Sunday, January 21, 2007

iit-jee math

1..Find the nature of roots of f(x)=e*x-x-1 =0.
2..the value of the parameter a for which the fuction f(x)=1+ax,where (a is nonzero), is inverse of itself is...
3..find the number of spherical balls in a complete pyramidal pile, whose base is an equilateral triangle each side of which contains n balls.

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