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The ambiguous question came to my last week exam

by abrowaqas
Tags: ambiguous, exam, week
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abrowaqas
#1
Mar28-12, 03:44 PM
P: 115
1. The problem statement, all variables and given/known data

If f(x) = x^3,
show that
f(a,b,c) = a+b+c

2. Relevant equations

I have given exam last week. and i am still searching for this question .. what this is about. is it from Tensor coordinate transformation or some numerical analysis involve here.

kindly somebody please help to solve or give idea to this question.

3. The attempt at a solution
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Mark44
#2
Mar28-12, 06:46 PM
Mentor
P: 21,304
Quote Quote by abrowaqas View Post
1. The problem statement, all variables and given/known data

If f(x) = x^3,
show that
f(a,b,c) = a+b+c

2. Relevant equations

I have given exam last week. and i am still searching for this question .. what this is about. is it from Tensor coordinate transformation or some numerical analysis involve here.

kindly somebody please help to solve or give idea to this question.

3. The attempt at a solution
As stated here, the question doesn't make sense. Your function f takes a single argument, so you could evaluate f(a), or f(b), or f(c), but not f(a, b, c).
abrowaqas
#3
Mar28-12, 11:44 PM
P: 115
But this question came in final Exam ... It has no error as paper setter claimed ..

How it will be solved ?
Anybody kindly help to solve this question

Office_Shredder
#4
Mar29-12, 11:09 AM
Emeritus
Sci Advisor
PF Gold
P: 4,500
The ambiguous question came to my last week exam

If this is the full problem statement as given, it has no solution because it doesn't make any sense. What is the definition of f(a,b,c) supposed to be?
tazzzdo
#5
Mar29-12, 08:34 PM
P: 47
Here you go:

Given a function f:ℝ → ℝ

f(x) := x3

f(a, b, c) := a + b + c

where x, a, b, c [itex]\in[/itex] ℝ

QED by trivialization.

lol now it's formal
abrowaqas
#6
Mar30-12, 04:56 AM
P: 115
I think all members are not taking this question seriously..

well this question appeared in Pakistan's superior examination for recruitment in March 2012.

this is the link of that paper..

http://www.cssforum.com.pk/css-past-...ths-paper.html

it is Paper II and question No. 8(a)..

kindly check ..
and then put funny remarks.
HallsofIvy
#7
Mar30-12, 06:22 AM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,556
It's hard to be serious about non-sense. And it is still non-sense. However you define "f(x)" that gives you NO information about "f(a, b, c)". They can't be the same function.


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