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April 28, 2026, 10:03:08 am
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Author Topic: Calc Help  (Read 937 times)  Share 

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Flaming_Arrow

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Calc Help
« on: May 09, 2009, 11:24:16 am »
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howcome when i solve this equation

it doesnt give me all the solutions?

the calc yieds x= 0.53,6.81 but when i draw the grahs i can see it intersects at x= 2.55, howcome the calc doesnt show that?
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bigtick

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Re: Calc Help
« Reply #1 on: May 09, 2009, 12:49:04 pm »
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2.2738, not 2.55
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TrueTears

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Re: Calc Help
« Reply #2 on: May 09, 2009, 01:06:55 pm »
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Hmm, I remember one question like this from the specialist book as well, the calc didn't give all the solutions no matter what I tried. I think the safest way is to just sketch it and use intersection to be sure you got all the solutions within the required domain.
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khalil

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Re: Calc Help
« Reply #3 on: May 21, 2009, 02:12:15 pm »
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Quote from: Flaming_Arrow on May 09, 2009, 11:24:16 am
howcome when i solve this equation

it doesnt give me all the solutions?

the calc yieds x= 0.53,6.81 but when i draw the grahs i can see it intersects at x= 2.55, howcome the calc doesnt show that?
I had the same problem. Is this from the review in the essentials text?
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