# ISI 2004 ME - I Answer Key

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## Re: ISI 2004 ME - I Answer Key

 Hi n1, Sorry for late response. We can take f(x)=e^(-x) hence f(x)*f'(x)<0 thus |f(x)| is a decreasing fn "Woh mara papad wale ko!"
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## Re: ISI 2004 ME - I Answer Key

 thanks :)
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## Re: ISI 2004 ME - I Answer Key

 In reply to this post by Bankelal What is the logic/ concept behind Q27. Thanks.
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## Re: ISI 2004 ME - I Answer Key

 Q 16 and Q 28 as well. Thank you.
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## Re: ISI 2004 ME - I Answer Key

 Hey Rongmon.. For 15 basically you can arrange all the boys in 5! ways.. now the girls can be arranged as thus: _ B1_ B2_ B3 _ B4_B5_ where the blanks represent places that can be occupied by girls.. So 4 girls can be arranged in 6P4 ways.. therefore ans is 6P4 x 5!
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## Re: ISI 2004 ME - I Answer Key

 In reply to this post by rongmon For 27...the concept is of diagnolisation of a matrix using the eigen values and eigen vectors
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## Maths Doubts - 2004

 In reply to this post by Ridhika Question No.12  IN this case shouldn't it be A) Limit don't exist as in because at x<1 its limit value is -1 at x=1 its 0 and x>1 its 1.
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## Re: Maths Doubts - 2004

 I'm gttng c for question no. 30.. if we tk y=0 we'll get x=3 & -3 so its crossing x axis 2 times
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## Re: Maths Doubts - 2004

 You're right, deepti.
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## Re: Maths Doubts - 2004

 Also in question no. 3 can u plz tell wht i shud do aftr taking derivative of the function? ? On May 9, 2015 11:52 AM, "Jim_Moriarity [via Discussion forum]" <[hidden email]> wrote: You're right, deepti. If you reply to this email, your message will be added to the discussion below: http://discussion-forum.2150183.n2.nabble.com/ISI-2004-ME-I-Answer-Key-tp7515784p7596704.html To unsubscribe from ISI 2004 ME - I Answer Key, click here. NAML
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## Re: Maths Doubts - 2004

 tell the question.
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## Re: Maths Doubts - 2004

 3rd On May 9, 2015 12:00 PM, "Jim_Moriarity [via Discussion forum]" <[hidden email]> wrote: tell the question. If you reply to this email, your message will be added to the discussion below: http://discussion-forum.2150183.n2.nabble.com/ISI-2004-ME-I-Answer-Key-tp7515784p7596706.html To unsubscribe from ISI 2004 ME - I Answer Key, click here. NAML 20150509_120143.jpg (2M) Download Attachment
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## Re: Maths Doubts - 2004

 The function changes its sign only once. And the derivative is positive, increasing function. Only one root.