The set of all x in the interval [0, π] for which 2 sin^2 x - 3 sin x + 1 ≥ 0 is?
I got three values of x:
π/6, 5π/6 and π/2
Options for the question are:
A) [π/6, 5π/6] U {π/2}
B) [π/6, 5π/6] - {π/2}
C) [π/6, 5π/6]
D) None
What is the correct option? And can someone explain the methodology behing representing the values in an interval or set?
For this notation, yes, but not when dealing with such intervals. d represents a single element, so in general (dunno what your book says.) you have to put it in brackets {d}.
Of course... you know everything, but you don't take enough care to read yourself............... when someone tells you the solution, it's always "I would have done this way !" "i knew it was that !"
Tsssk