Qualification > Math

C3 and C4 DOUBTS HERE!!!

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deadlyelder:
The Trinometry and Further Trinometry are truly nightmare. Please share tips for those. Do not have any problem with last chapter. Am solving all the practice papers that are available. How are you guys remembering the trinometry formulas? ???

mdwael:
january 2007 question 4 ii

it says find the value of dy/dx:

In the end you get this..   9 x 4^0.5

this should give +18 and -18 but why in the markscheme only +18 is given? They didnt mention anything that the value is greater than 0..

elemis:
Think about the ex graph. The question contains a graph that is very similar to the ex graph.

Imagine it in your head... does the gradient ever have a negative value ? Nope, its an increasing function.

deadlyelder:
Good Luck to everyone for this paper. :)

hmh:

--- Quote from: thenewkid™ on June 08, 2011, 11:15:45 pm ---anybody have any revision notes or pointers?

--- End quote ---

Here are some..

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