Ok i have the following question:
Given the functions:
F(x) = 2x^2 + 3x - 2
G(x) = 1 - 2x^2
Find:
a) the zeros of f(x), g(x)
Now I've used the following formula
-b ±√b²-4ac²
2a
and worked out the zeros of f(x) fine, but I'm confused as to how to accomplish the same...
aaaah ok i feel so stupid now. right, it has clicked. thank you so much, pretty sure I will be able to figure out the formula for the odd numbers now. its always the blindingly obvious i slip up on :smile:
yeah i follow it right up until the end where i just confuse myself.
ok the formula for calculating the addition of n integers is:
n(n+1)/2
so for all the integers up to and including 10, added together, using the formula the answer is 55 which is correct.
Now from what you were...
bah now I am really confused :frown:
ok i get what you're saying Even (1) refers to the first even integer. So my formula is incorrect as the answer I should expect to get is 2. now to think up a new forumla :confused:
Ok, I haven't done maths for a few years now and I've been set the following question:
The sum of the first integers is given by:
Sum(n) = 1+2+3+4 ... +n = n(n+1)/2
Find similar formulae for
Even(n) = 2+4+6+8 ... +2n
Odd(n) = 1+3+5+7 ... +(2n-1)
Now the formulae I have come...