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Mathematics: Post your doubts here!

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can someone explain how to find the greatest value of arg z in 10 b) i've drawn a circle with radius 2 and centre (0,3), shaded the inner circle.

Screen Shot 2012-10-29 at 14.15.38.png
 
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LOL, looks like its desperation time here with every1 just dumping their questions here nd nt bothering 2 answer any

If ur gonna ask a question please answer 1 too, so that we can help each other and move faster
 
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Some please solve this equation for me

View attachment 17489

Thanks
4x^2- 7x-1/ [x+1][2x-3] = A+ {B/[x+1]}+{C/[2x-3]}
Now multiply x+1 on the R.h.s which will give u 4x^2-7x-1/[2x-3]
then, substitue x=-1 to get B.
Repeat the same for C, but thn now multiply the R.h.s with [2x-3]
so here x= 3/2
to find A, substitute any num, say for example x= 0 on either sides along with the
values u found for B and C.

....
That gives u A= 2 , B= -2, C=-1
 
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I am having some serious problems in differentiation.. please help me solve the three questions below.

XT41G.jpg


I've given the answers to re-check.. please show me the working

Reply ASAP.. thanks
 
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can someone explain how to find the greatest value of arg z in 10 b) i've drawn a circle with radius 2 and centre (0,3), shaded the inner circle.

View attachment 17503

draw a line from the origin to the circle at the most left hand side.. then find the angle starting from x-axis, anti-clockwise.
hope it helps.. sorry for the bad drawing..

Untitled-1.jpg
 
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