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how shall we determine whether the statement is true or not in the following link
http://elearning.ppu.edu/mod/resource/view.php?id=14978
page 3, q4, a), 1. |
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As you can see, nobody replied your question... It'd be good if you could post the question itself, instead of the link to it. Can you type it? If not, can you do a screenshot and post the picture? Ask me if you don't know how to do the latter. |
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Comment on Unknown008's post
Yeah how can I post the picture? I would really appreciate your help...
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Comment on Unknown008's post
N I'm sorry I didn't c your second answer I thought that you didn't c my comment or something so I re-asked again.. n it was just now that I noticed no one could access the link cause it's an account of mine :P
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Ok, open the window where you have the question. Press PrintScreen button on your keyboard (you might have to look for it. On my keyboard, it's over the numbers part, on the upper right) Then, open Microsoft Paint, and press edit, paste. You'll see the snapshot appear. Save and upload the picture on a free image hosting site like tinypic.com, photobucket, p1cture.me, etc. Do multiple screenshots if necessary and you can even edit when you're in paint. The post the direct link to the image when you have uploaded, or the message boards link. |
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Comment on Unknown008's post
 OK thanks q4 a) 1. |
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Comment on Unknown008's post
http://i52.tinypic.com/ejin34.jpg
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Okay, posting in the answer box would be more appropriate for yourself as there is more space to answer, especially when it comes to diagrams. I'll have to ask one question before we continue. Do you know some calculus, which involves integration? |
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You don't need to know anything about integration - just recognize what it means given that the graph shows the value of the derivative of f(x) is negative between x=3 and x=4 (i.e. f'(x) is negative as shown in the graph). This means the slope of the function is negative in that region. So what does that tell you about whether f(3) is greater than, less than, or equal to f(4)? |
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Oh, yes, you're right, too many things running in my head those past few days. :( |
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Comment on Unknown008's post
I know integration, so we can't tell whether f(3) is greater than f(4) from this graph or what?
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Yes, from the gradient you can tell. At f(3) the gradient is -4, at f(4), the gradient is -3 This means, form f(3) to f(4), the gradient is less decreasing. What can you deduce? |
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