Original post by Presto
Could someone please tell me why the graph is like this and not a bit like the red line? Leaning towards x but not touching.
It looks wrong to me. The curve should never go below the x-axis. This is a simple horizontal translation of the standard a^x graph and so your red line looks fine.
Original post by Presto
Could someone please tell me why the graph is like this and not a bit like the red line? Leaning towards x but not touching.
Is this a mark scheme from an official paper? If it is do you mind linking to it?
Original post by Notnek
Is this a mark scheme from an official paper? If it is do you mind linking to it?
This is Edexcel IAL C12 Oct 16 paper
Question paper:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_que_20161010.pdf
Mark scheme:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_rms_20170222.pdf
Original post by Presto
This is Edexcel IAL C12 Oct 16 paper
Question paper:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_que_20161010.pdf
Mark scheme:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_rms_20170222.pdf
Question paper:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_que_20161010.pdf
Mark scheme:
http://dynamicpapers.com/wp-content/uploads/2015/09/WMA01_01_rms_20170222.pdf
It's best to check the official link if you notice a mistake and I did here. But it's the same so it looks like there's a mistake in the MS that hasn't been corrected.
Original post by Notnek
It's best to check the official link if you notice a mistake and I did here. But it's the same so it looks like there's a mistake in the MS that hasn't been corrected.
WHAT?! Are you 100% sure that it's a mistake?
Original post by Presto
WHAT?! Are you 100% sure that it's a mistake?
Yes. Their graph clearly goes below the x-axis but whatever power you raise 3 to, you're never going to get a negative number. Here's what it should look like:
https://www.desmos.com/calculator/miz3h2fhwt
Original post by Notnek
Yes. Their graph clearly goes below the x-axis but whatever power you raise 3 to, you're never going to get a negative number. Here's what it should look like:
https://www.desmos.com/calculator/miz3h2fhwt
https://www.desmos.com/calculator/miz3h2fhwt
I'm so pissed rn. Thank you!
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