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June 16, 2024, 05:27:57 pm
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Author Topic: My thread of questions  (Read 26195 times)  Share 

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khalil

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Re: My thread of questions
« Reply #150 on: October 09, 2009, 10:36:24 pm »
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In orther words, the answer given is wrong?
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TrueTears

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Re: My thread of questions
« Reply #151 on: October 09, 2009, 11:03:44 pm »
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Quote from: khalil on October 09, 2009, 10:36:24 pm
In orther words, the answer given is wrong?
Yeah.
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ngRISING

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Re: My thread of questions
« Reply #152 on: October 12, 2009, 01:06:27 am »
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Quote from: TrueTears on October 09, 2009, 11:03:44 pm
Quote from: khalil on October 09, 2009, 10:36:24 pm
In orther words, the answer given is wrong?
Yeah.

phew. just did it lol. thought i got it wrong as well. didnt do too well on this prac exam. 75% :S .
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TrueTears

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Re: My thread of questions
« Reply #153 on: October 12, 2009, 01:11:59 am »
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Quote from: ngRISING on October 12, 2009, 01:06:27 am
Quote from: TrueTears on October 09, 2009, 11:03:44 pm
Quote from: khalil on October 09, 2009, 10:36:24 pm
In orther words, the answer given is wrong?
Yeah.

phew. just did it lol. thought i got it wrong as well. didnt do too well on this prac exam. 75% :S .
I'm sure you will improve, just do more exams :P

Good luck :)
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PhD @ MIT (Economics).

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khalil

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Re: My thread of questions
« Reply #154 on: October 12, 2009, 08:45:10 pm »
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TSFX sent this, and they don't mention how to do it correctly to lure us to their lectures...can someone explain
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Gloamglozer

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Re: My thread of questions
« Reply #155 on: October 13, 2009, 04:22:25 pm »
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Quote from: khalil on October 12, 2009, 08:45:10 pm
TSFX sent this, and they don't mention how to do it correctly to lure us to their lectures...can someone explain

Went to their lectures on the holidays and my lecturer didn't mention it.
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Bachelor of Science (Mathematics & Statistics) - Discrete Mathematics & Operations Research

khalil

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Re: My thread of questions
« Reply #156 on: October 13, 2009, 04:32:23 pm »
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Does anyone know the difference between solve and nSolve?
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Gloamglozer

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Re: My thread of questions
« Reply #157 on: October 13, 2009, 04:42:37 pm »
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nSolve will just give you real solutions so in questions where you want only real answers, then the calculator may be faster.
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Bachelor of Science (Mathematics & Statistics) - Discrete Mathematics & Operations Research

GerrySly

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Re: My thread of questions
« Reply #158 on: October 13, 2009, 04:44:13 pm »
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Quote from: khalil on October 13, 2009, 04:32:23 pm
Does anyone know the difference between solve and nSolve?
nSolve gives numeric answers and solve gives exact answers. I think nSolve is faster being it doesn't have to rationalise or anything like that
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khalil

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Re: My thread of questions
« Reply #159 on: October 13, 2009, 04:48:39 pm »
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So is that why when I type in solve(invNorm(x,8,2)=9,x)|x>0, I don't get a solution cos' its exact value would be a huge fraction? Also, with nSolve do I always have to specify a domain. Moreover, does the n in nSolve stand for numeric?
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khalil

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Re: My thread of questions
« Reply #160 on: October 13, 2009, 05:19:48 pm »
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Does ANY1 know how to move the cursor in the Ti-nspire calc to the start of a number in the entry line....eg. 1234| < how do I move | to the front without clicking entry pad 4 times?

I've spent so long trying to figure this out
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TrueTears

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Re: My thread of questions
« Reply #161 on: October 13, 2009, 05:22:54 pm »
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I don't use Ti-nspire but it may be the same.

I use 2ND + <- for TI-83
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PhD @ MIT (Economics).

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khalil

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Re: My thread of questions
« Reply #162 on: October 13, 2009, 05:49:27 pm »
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 :-\ it doesnt work, thanks anyway
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jaja

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Re: My thread of questions
« Reply #163 on: October 14, 2009, 07:19:17 pm »
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I need help
If a panel of two people is selected at random from the population, 60% of whom are aged 25 years or less, find:
the probability that the panel contains the same number of people aged 25 years or less and people aged over 25 years

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bigtick

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Re: My thread of questions
« Reply #164 on: October 14, 2009, 08:25:45 pm »
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0.6x0.4+0.4x0.6=0.48
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