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Mathematics: Post your doubts here!

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can any one explain me how to work with this method in p3 vectors :(

Use scalar product to obtain a – b + 2c = 0 and 2a + 2b + c = 0 B1
Solve and obtain one ratio, e.g. a : b M1
Obtain a : b : c = 5 : −3 : −4, or equivalent A1
Substitute coordinates of a relevant point and values for a, b and c in
general equation of plane and evaluate d M1
Obtain answer 5x – 3y – 4z = −2, or equivalent

and how to calculate maximum and minimum argument and modulus of a complex number from argand diagram ?

whitecorp Can you help me with it plz? Have some more questions too...have the paper in 2 days.. :(
 
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can sum 1 pls solve d 2nd part of this question? with diagram! pls.....
 

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Please help with and 9(ii) & 10(i)

In question 9, after you integrate you are left with:
(2A – 5)0.5 - kt = c

when you find the square root of what is inside the bracket, is it not :
±3 ? if so why does the marking scheme only use the value +3????

Thanks
 

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That is correct, I teach A level H2 maths. Have a good day too. Peace.
Hello sir for iteration!!a doubt in my mind!!
Do we take the initial value as average suppose if the root lies between 1
6<x<9 then do we do (6+9)/2 and take 7.5 as initial value or just take 6 the starting value as initial value !!!
plz its uregent and many of my friends also have this doubt plz help sir
 
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