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    4 parts. I need help on b, c and d please.

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    Sorry about the shadow too :/
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    (Original post by Fractite)
    4 parts. I need help on b, c and d please.

    Name:  IMG_20170105_175844.jpg
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Size:  477.5 KB

    Sorry about the shadow too :/
    Could you rotate the photo and show some working please?
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    (Original post by Mr M)
    Could you rotate the photo and show some working please?
    The thing is, I have no idea what to do for the parts b, c and d.

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    (Original post by Fractite)
    The thing is, I have no idea what to do for the parts b, c and d.

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    Well, the integral in part b is the area under the graph between x = r - 1 and x = r. Any rectangle between these two x values which lies totally beneath the curve will have smaller area, right?

    c and d follow fairly naturally from b. Note that the integral between 1 to N is the same as the integral from 1 to 2 + the integral from 2 to 3 + ... + the integral from N-1 to N.
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    (Original post by Fractite)
    The thing is, I have no idea what to do for the parts b, c and d.
    Does this image help you get started with b)?
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    (Original post by 13 1 20 8 42)
    Well, the integral in part b is the area under the graph between x = r - 1 and x = r. Any rectangle between these two x values which lies totally beneath the curve will have smaller area, right?

    c and d follow fairly naturally from b. Note that the integral between 1 to N is the same as the integral from 1 to 2 + the integral from 2 to 3 + ... + the integral from N-1 to N.
    (Original post by Mr M)
    Does this image help you get started with b)?
    Thank you both!
 
 
 
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