Hey there! Sign in to join this conversationNew here? Join for free
    Offline

    21
    ReputationRep:
    When doing differentiation, applying to real life aspects, for example finding the maximum volume, why do we set dV/dx = 0
    Offline

    17
    ReputationRep:
    Can anyone help me with transforming graphs? like how can you tell if its a transformation parallel to the y axis or if its parallel to x axis?
    Offline

    2
    ReputationRep:
    (Original post by SGHD26716)
    When doing differentiation, applying to real life aspects, for example finding the maximum volume, why do we set dV/dx = 0
    Think of stationary points
    Offline

    1
    ReputationRep:
    (Original post by Logic4Life)
    Can anyone help me with transforming graphs? like how can you tell if its a transformation parallel to the y axis or if its parallel to x axis?
    If the change is inside the bracket then x axis. If change is outside the bracket then y axis. The only exception is when there is a reflection (negative sign). If the (-) is outside the bracket then reflection in x axis but if (-) is inside the bracket then reflection in y axis.
    Offline

    4
    ReputationRep:
    (Original post by Logic4Life)
    Can anyone help me with transforming graphs? like how can you tell if its a transformation parallel to the y axis or if its parallel to x axis?
    Below is a link to a picture which should help. it maybe a good idea to put it in a table for what affects the x axis and what affects the y axis.
    https://l.wordpress.com/latex.php?la...&fg=000000&s=3
    Offline

    21
    ReputationRep:
    (Original post by CLGC98)
    Think of stationary points
    So volume is the same?
    Offline

    0
    ReputationRep:
    Do you always set dy/dx to 0 when finding max or minimum in real life situations?
    Offline

    0
    ReputationRep:
    How did everyone find the C1 exam? Question 11 & 9 were pretty hard....
    Offline

    3
    ReputationRep:
    How did people find it?! I thought it went VERY well!!
    Offline

    2
    ReputationRep:
    I liked it! But I wonder, what did you guys write down for what did you guys say for why the gradient of AB only is for point A?
    Offline

    0
    ReputationRep:
    What was the answer for k in the last question? I foudn it as -3(1/8)>k.
    Offline

    1
    ReputationRep:
    Hardest C1 paper yet?
    Offline

    3
    ReputationRep:
    (Original post by Dmitry_Mednov)
    What was the answer for k in the last question? I foudn it as -3(1/8)>k.
    I got that k is less that -7.5
    Offline

    1
    ReputationRep:
    Harder than any of the practice papers so far. OCR got me with very hard Geography and now the Maths. Thanks OCR!
    Offline

    2
    ReputationRep:
    Never struggled so much on a maths paper,i can safely say i won't get an A now.
    I got a, as 25/2 and k, as -1+- root 15.Which I think are both wrong.
    Offline

    2
    ReputationRep:
    That is the third C1 paper I've sat - definitely hardest yet!
    Offline

    0
    ReputationRep:
    (Original post by Skipper12345)
    I got that k is less that -7.5
    I think most people got that answer
    Offline

    0
    ReputationRep:
    It was defo the hardest c1 paper in the last 6 years mate reckon I got 60
    Offline

    0
    ReputationRep:
    Does anyone remember what the last question's equations were?
    Offline

    1
    ReputationRep:
    fml why could i not have been born 1 year later and sat the june 2015 paper that **** was piss easy compared to this im ****ed unless its like 60 for an A
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Would you like to hibernate through the winter months?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.