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    (Original post by LAZYABDI)
    Is your chemistry with OCR Salters B?
    Nope, it's OCR A


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    (Original post by MathsNerd1)
    Nope, it's OCR A


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    You guys are lucky OCR B sucks so badly and some stuff you guys dont have to learn
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    (Original post by Robbie242)
    Ah yes have fun revising chem :P I need to actually revise history now as I've got history tomorrow morning, the cheek of my exam timetable econ and M1 today and then history tomorrow morning, they love me honestly
    Oh I will, it's just the most enjoyable subject ever, not really but it's got to be done unfortunately and ouch, best of luck for tomorrow with your History exam


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    (Original post by LAZYABDI)
    You guys are lucky OCR B sucks so badly and some stuff you guys dont have to learn
    Really? How bad could it be really?


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    (Original post by MathsNerd1)
    Really? How bad could it be really?


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    Really bad. Really.


    On topic: having a mind blank with this C4 question, would be grateful if someone could nudge me in the right direction for part a

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    (Original post by suncake)
    Really bad. Really.


    On topic: having a mind blank with this C4 question, would be grateful if someone could nudge me in the right direction for part a

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    You need to form an equation with h, as the subject (using the info given in the question). That's the trick to the question.
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    (Original post by suncake)
    Really bad. Really.


    On topic: having a mind blank with this C4 question, would be grateful if someone could nudge me in the right direction for part a

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    I'm quite curious now and want to see some questions that they could ask to try out for myself
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    (Original post by MathsNerd1)
    Really? How bad could it be really?


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    More stuff to learn compared to ocr A and exam is different Better finish my revision so i can practise some papers now...
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    Worked solution to this ?Name:  ImageUploadedByStudent Room1368469706.170118.jpg
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    (Original post by krishkmistry)
    Worked solution to this ?Name:  ImageUploadedByStudent Room1368469706.170118.jpg
Views: 154
Size:  130.1 KB Q4


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    If the function is increasing, f'(x) \geq 0.

    So just differentiate the function and set it more than or equal to 0. Then, solve the inequality.
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    MY LAST EXAM IS IN 5 WEEKS being c4 with edexcel holy moly thats sooner than I thought D':
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    (Original post by justinawe)
    If the function is increasing, f'(x) \geq 0.

    So just differentiate the function and set it more than or equal to 0. Then, solve the inequality.
    I get 2 and -2 as my critical values but I get x<-2 and x<2 and it's wrong and I don't get it


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    (Original post by krishkmistry)
    I get 2 and -2 as my critical values but I get x<-2 and x<2 and it's wrong and I don't get it


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    Did you get x^2 \leq 4 ?
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    (Original post by justinawe)
    If the function is increasing, f'(x) \geq 0.

    So just differentiate the function and set it more than or equal to 0. Then, solve the inequality.
    Are you sure that a function is increasing at f'(x) = 0?
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    (Original post by joostan)
    A man's gotta have a hobby
    And yeah - I guess our wedding needs arranging
    You'll always have a special place in my heart Justeeeeeeeeeeeeeeeen </3
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    (Original post by justinawe)
    Did you get x^2 \leq 4 ?
    Thanks ,I know where I've gone wrong


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    (Original post by Hype en Ecosse)
    Are you sure that a function is increasing at f'(x) = 0?
    I thought it is, but it's not strictly increasing.
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    (Original post by Felix Felicis)
    You'll always have a special place in my heart Justeeeeeeeeeeeeeeeen </3
    Nawwwwww
    This may be a silly question, but is that the correct no. of e's?
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    (Original post by joostan)
    I thought it is, but it's not strictly increasing.
    Ah, you've got me there.
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    Name:  ImageUploadedByStudent Room1368471079.316305.jpg
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    Can't seem to properly understand this question and I can't do the second part - help pls ?
    Btw the graph is y=2^x


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