ISI INTERVIEW PREP

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ISI INTERVIEW PREP

Mr. Nobody
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Re: ISI INTERVIEW PREP

neha
I think it should be done like this:

let f(x) =e^x-x-2

f'(x)=e^x -1
f"(x)=e^x,, putting f'(x)=0 gives x=0  and f"(0) =1 which means at x=0 the function has a local minima,, The point of local minima is (0,-1).Since this point lies below the origin,, it must cut the x axis which means f(x) =0 for two real values of x
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Re: ISI INTERVIEW PREP

anurag
In reply to this post by Mr. Nobody
one soln 1<x<2 and other -2<x<-1 .
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Re: ISI INTERVIEW PREP

Mr. Nobody
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Re: ISI INTERVIEW PREP

Vasudha
Neha is right..it's a continuous function and it has a local minima at (0,-1)..just draw the figure once..u'll get it. and u get 1<x<2 and -2<x<-1 through the intermediate value theorem..
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Re: ISI INTERVIEW PREP

anurag
I checked by looking at the opposite signs of f(x) at these values.


@vasudha-congratulations saw your name on DSE admission list ,altho i dint gt thru so help me need some tips to crack ISI as its d only option i hv right now :/
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Re: ISI INTERVIEW PREP

Vasudha
In reply to this post by Vasudha
and i'm getting the same long run cost function
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Re: ISI INTERVIEW PREP

Vasudha
In reply to this post by anurag
thanks anurag. hope u get into isi. it's better than dse in many ways. solving these jrf papers seems to be a good idea. plus u can look at some of the maths questions from DSE option B question papers. just keep solving problems the way u did for the written test. keep in mind what Amit sir posted about the interview. all the best :)
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Re: ISI INTERVIEW PREP

Vasudha
and most importantly stay calm during the interview!
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Re: ISI INTERVIEW PREP

anurag
@vasudha- Thnku :) ya i saw you ppl solving jrf quesns so strted this morning only..jst keep posting tips n wtever you practicing for interviews..wts ur prfrnce DSE or ISI ?
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Re: ISI INTERVIEW PREP

Vasudha
Sure :)
i personally prefer dse.
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Re: ISI INTERVIEW PREP

anurag
ok thnku :)
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Re: ISI INTERVIEW PREP

Mr. Nobody
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Re: ISI INTERVIEW PREP

Mr. Nobody
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Re: ISI INTERVIEW PREP

Mr. Nobody
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Re: ISI INTERVIEW PREP

Vasudha
Umm, i guess u just put l=y(a/k+m). from here u get y=kl/(a+mk). if v r given a production function we get l in terms of k and y to minimize cost, isnt it? i'm just doing the reverse.
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Re: ISI INTERVIEW PREP

deepak
In reply to this post by Mr. Nobody
Since a production function is given, we could perhaps calculate the labor demand from this equation (MPL = real wage). This would have to be equal to the labor supply determined in part 1. Substitute this back into the production function and we should find equilibrium output Y. BUt I'm not sure how Investment will figure in this equation, as this is more of a supply side equation :/ . And I think theta determines the Labor share of income?
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Re: ISI INTERVIEW PREP

deepak
In reply to this post by Vasudha
Vasudha,I did the same. It does make sense to do this, I think..
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Re: ISI INTERVIEW PREP

neha
In reply to this post by neha
Are you guys getting k =10 for question 7(a),REI of the same paper ?
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Re: ISI INTERVIEW PREP

Vasudha
In reply to this post by deepak
i'm not getting this one :|
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