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C1 and C2 DOUBTS HERE!!!!!

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The Golden Girl =D:

--- Quote from: Kimo Jesus on October 30, 2011, 07:32:52 pm ---question in attached

thanks in advanced

--- End quote ---

I did face such a Question in Chapter 6 C3 ( I think it's the same one)

I asked my teacher where he got the -1 from and this is what he did :

He substituted (theta = 0  {x = 0} ) in the Equation, in other words:

y = tan (theta -45)
y = tan (0 - 45)
y = tan (-45)
y = -1

Which means it has to intersect with y-axis at that point i.e. ( -1 , 0 )

I hope you got it ;)

                           ...................................................................


--- Quote from: ~ Miss Relina ~ on October 25, 2011, 03:33:44 pm ---another question to bother this thread about is here

for who have C2 book its on page 193 Q 6 in the revision exercise 3

what I don't understand is that the book's answer is 4 and when I did integration of the two parts of my  sketch , one area was -ve and other was +ve so I added them ignoring the -ve sign so...............are these steps right or I've just missed somethnig up ??? cause my anwser was ''9.5''

Thanks in advance  ;)

--- End quote ---

Here is the Answer from the Solution Bank :


--- Quote ---Area = integration sign thingy with base 2 4x3-3x2dx Remember integration sign thingy axndx=(axn+1) /(n+1 )

Anyhoo here it is
 
=[(x4/4) - x3]24  }=> The 4 is supposed to be in the TOP and  2 at the BOTTOM  but it didn't turn out to be perfect so thought of Mentioning it incase any confusion was caused =]
 
=[((4)4 /4 )-(4)3)] -[(2)4/4) -(2)3) ]

=(64-64) - [(16 /4) -8]
=0-(4-8)
=0-(-4)
=4
 
--- End quote ---

Relina : I just copied and pasted it over here (didn't even read it thoroughly) ,I hope you get it =]


~If I helped you, Please don't forget to include me in your Prayers ;)
 

~ Miss Relina ~:
^ thnkx alot seems that there is no other route .........anyways no probs Thanks again  :)

The Golden Girl =D:
I'm glad I helped :D

Welcome =]

YU-GI-OH!:
Can someone please help me with question 8 part (b) on the mixed exercise for chapter 6 (C1). It's on page 109. Thank you in advance.

Arthur Bon Zavi:

--- Quote from: YU-GI-OH! on November 18, 2011, 10:47:52 pm ---Can someone please help me with question 8 part (b) on the mixed exercise for chapter 6 (C1). It's on page 109. Thank you in advance.

--- End quote ---

Some people do not have access to that book, so I suggest you to type the question down.

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