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March 29, 2024, 12:30:34 am

Author Topic: Bucket's Questions  (Read 39085 times)  Share 

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bucket

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Re: Bucket's Questions
« Reply #405 on: November 08, 2008, 11:20:46 pm »
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Hmm, I really am not good with inequalities.
Here is my working for this question.







to have two solutions



This is where I stuff up.





or I know I've done something wrong here with the inequality sign lol.
The correct answer is or . Where does the < sign come in? :P
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nerd

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Re: Bucket's Questions
« Reply #406 on: November 08, 2008, 11:29:21 pm »
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Its best to draw the graoh of and , see where they intersect and see where is greater than .

Remember, when you have non-linear inequalities, you must draw the graph, or at the very least visualise it, in order to solve the inequality!
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bucket

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Re: Bucket's Questions
« Reply #407 on: November 08, 2008, 11:32:47 pm »
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Oh yeah we can use our calculators!
Lol thanks a lot man.
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bucket

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Re: Bucket's Questions
« Reply #408 on: November 08, 2008, 11:55:57 pm »
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Is {}= asking for solutions? lol.

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ell

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Re: Bucket's Questions
« Reply #409 on: November 08, 2008, 11:59:04 pm »
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Is {}= asking for solutions? lol.



yup, its asking for the values of x. also : (colon) means 'such that'

onlyfknhuman

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Re: Bucket's Questions
« Reply #410 on: November 09, 2008, 12:01:13 am »
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Bucket im curious what you got for this, cause i did this earlier today and i got



And the answer stated that it was alone. i think
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ell

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Re: Bucket's Questions
« Reply #411 on: November 09, 2008, 12:03:14 am »
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can't equal -2.

nerd

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Re: Bucket's Questions
« Reply #412 on: November 09, 2008, 12:18:13 am »
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Think about the graph of of . For any value of , it can't be -2 (the range is [-1,1]) so the only solution is
« Last Edit: November 09, 2008, 12:20:08 am by nerd »
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bucket

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Re: Bucket's Questions
« Reply #413 on: November 09, 2008, 09:09:33 pm »
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"If c=20 calculate the probability that a type A butterfly is misclassified and a type B butterfly is misclassified."

WTF IS C???
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Mao

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Re: Bucket's Questions
« Reply #414 on: November 09, 2008, 09:23:48 pm »
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sounds like cont-random/normal dist.
what's the full question?
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bucket

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Re: Bucket's Questions
« Reply #415 on: November 09, 2008, 09:40:14 pm »
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Thats part G of a question 4 in here.
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