Function Problem

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Function Problem

Post  Ben R on Tue Oct 07, 2008 6:51 am

Define a ♣ b = a^2 – b.

What is the value of (2(4 ♣ 13)) ♣ (3(3 ♣ 5))?

ANSWER (DO NOT CLICK UNTIL YOU HAVE FINISHED THE PROBLEM AND POSTED ANSWER):


Spoiler:
Following order of operations, we will solve the inner-most parenthesis first.

(4 ♣ 13) = 42 – 13
= 16 – 13
= 3

(3 ♣ 5) = 32 – 5
= 9 – 5
= 4

23 ♣ 34 = 8 ♣ 81
= 82 – 81
= 64 – 81
= –17

-From the Math Counts Website


Last edited by Ben R on Tue Oct 07, 2008 6:55 am; edited 1 time in total
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Answer

Post  Mira Holford on Tue Oct 07, 2008 6:54 am

I did it the same way you did Very Happy

I got
Spoiler:
-17

Mira
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Re: Function Problem

Post  Ben R on Tue Oct 07, 2008 6:56 am

Mira Holford wrote:I did it the same way you did Very Happy

I got
Spoiler:
-17

Mira

Actually, I didn't really do it. I just copied it from the Math Counts website. It's a pretty straightforward problem, and I thought it'd be a good way to start off.
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thx

Post  Mira Holford on Tue Oct 07, 2008 6:57 am

ok.....btw thx for the timezone thing


Last edited by Mira Holford on Tue Oct 07, 2008 6:57 am; edited 1 time in total (Reason for editing : cuz i messed up)
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Re: Function Problem

Post  Archis on Sat Mar 28, 2009 7:12 pm

*Mod Note: Topic moved to Algebra->Solved Problems*
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