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Cambridge Prelim MX1 Textbook Marathon/Q&A (2 Viewers)
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davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Do you happen to have the answer? Just want to compare my answer with the questionCould someone please help me with q19 part a and b
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Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
You have the book!
Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Hey NOPE, it's a show question so there's no solutions. How did you draw the diagram? The answer is basically what you had to show. No worked solutions unfortunately.
Last edited:
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Im at work at the moment, I left the book at home.
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
I thought of a basic example like a dice at the vertical distances , with the angles to the horizontal and vertical.
Knowing that each length of a cube in this case is 'x', i then converted the AB component to a vertical length (using sine). I also did the same thing for vertex, P. Because it is a 3D shape, I converted the diagonal distance, to a vertical component as well. (using cos)
Here is my diagram:
(My pencil marks show the respective vertical components)
I had a crack at that question tonight, happy to receive any feedback from any forumites.Could someone please help me with q19 part a and b
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I thought of a basic example like a dice at the vertical distances , with the angles to the horizontal and vertical.
Knowing that each length of a cube in this case is 'x', i then converted the AB component to a vertical length (using sine). I also did the same thing for vertex, P. Because it is a 3D shape, I converted the diagonal distance, to a vertical component as well. (using cos)
Here is my diagram:
(My pencil marks show the respective vertical components)
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Could u please show working for converting AB into vertical components. I'm not sure how u did that.I had a crack at that question tonight, happy to receive any feedback from any forumites.
I thought of a basic example like a dice at the vertical distances , with the angles to the horizontal and vertical.
Knowing that each length of a cube in this case is 'x', i then converted the AB component to a vertical length (using sine). I also did the same thing for vertex, P. Because it is a 3D shape, I converted the diagonal distance, to a vertical component as well. (using cos)
Here is my diagram:
(My pencil marks show the respective vertical components)
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Here is my working out for vertical component AB.
Here is my working out for vertical component AB.
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Its been a while since I have dealt with forces down an inclined plane . (Physics was not my forte)
But you could relate to that if it helps you out, here is an image of an object down an inclined plane. (and the angles involved)
Its been a while since I have dealt with forces down an inclined plane . (Physics was not my forte)
But you could relate to that if it helps you out, here is an image of an object down an inclined plane. (and the angles involved)
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Like I said before its a 3D shape so , how I did it was I looked at in 2 parts. I think of AB covering the lower portion of the height, and vertex P covering the upper portion of the height. (What I have done is I have highlighted the purple in this region in the upper half, the red as the lower half). By adding the 2 vertical components we are able to obtain the vertical height mentioned.
Phantexceed
New Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Hey did you do every single question in the textbook? Or just the harder ones?
Hey did you do every single question in the textbook? Or just the harder ones?
appleibeats
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Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Not sure how to approach part a).
Not sure how to approach part a).
appleibeats
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Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Need help with part a).
Need help with part a).
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
The Polynomial P(x) is divided by (x-1)(x+2). Find the remainder, given that P(1)=2 and P(-2)=5. [Hint: The remainder may have degree 1.]
The above division process is then usually expressed as an identity:
P(x)=A(x).Q(x)+R(x)
P(x) is the original polynomial
A(x) is the divisor
Q(x) is the quotient
R(x) is the remainder
Here is my working out
The Polynomial P(x) is divided by (x-1)(x+2). Find the remainder, given that P(1)=2 and P(-2)=5. [Hint: The remainder may have degree 1.]
The above division process is then usually expressed as an identity:
P(x)=A(x).Q(x)+R(x)
P(x) is the original polynomial
A(x) is the divisor
Q(x) is the quotient
R(x) is the remainder
Here is my working out
davidgoes4wce
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appleibeats
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Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
the answer in the textbook says 1/2 not -5/2
the answer in the textbook says 1/2 not -5/2
davidgoes4wce
Well-Known Member
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
I reckon that answer might be wrong (textbook), happy to be proved wrong though.
I reckon that answer might be wrong (textbook), happy to be proved wrong though.