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AQA A2 Mathematics MPC4 Core 4 - 9th June 2015 [Discussion & unofficial markscheme]

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Original post by CD223
Cool! Glad it's correct. Do my workings make sense?


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yep perfect!

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Reply 581
Original post by the_googly


Aw good! Is revision going okay? How many papers have you done?


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Original post by CD223
Aw good! Is revision going okay? How many papers have you done?


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Need 183 more UMS for 480 so I think I'll get that from just C3 and S1 hehe
Reply 583
Original post by Stepidermis
Need 183 more UMS for 480 so I think I'll get that from just C3 and S1 hehe


How odd. I also need 183. What were your module scores last year?


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Original post by CD223
How odd. I also need 183. What were your module scores last year?


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will start papers on weekend. nearly finished reviain

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nearly finished revision. bit late but oh well!

question 3b anyone

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Original post by the_googly
nearly finished revision. bit late but oh well!

question 3b anyone

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Dot product of the lines PQ and RQ? :smile:
Original post by HennersPD
Dot product of the lines PQ and RQ? :smile:


why?

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As im thinking the 3 points form a triangle? I could be wrong!
Reply 589


Original post by HennersPD
Dot product of the lines PQ and RQ? :smile:


Wouldn't you dot product:

RQ⃗∙RS⃗=0\vec{RQ} \bullet \vec{RS} = 0

? As QRS is a right angle.


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Original post by CD223
Wouldn't you dot product:

RQ⃗∙RS⃗=0\vec{RQ} \bullet \vec{RS} = 0

? As QRS is a right angle.


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is dot product the same as scaler product

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Reply 591
Original post by the_googly
is dot product the same as scaler product

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Yup :smile:


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Original post by CD223
Wouldn't you dot product:

RQ⃗∙RS⃗=0\vec{RQ} \bullet \vec{RS} = 0

? As QRS is a right angle.


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if I do dot product then can you explain how will that help? thanks

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This might sound silly, but since I've started writing with a fine tip pen I've made so many less silly mistakes from things like not reading my writing properly,I'd recommend it if anyone does the same as me!:colondollar:
Original post by CD223
How odd. I also need 183. What were your module scores last year?


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97 100 100 :smile: c1c2d1
Reply 595
Original post by the_googly
if I do dot product then can you explain how will that help? thanks

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Ever so sorry, I thought you needed help with 3c and not 3b. Here's my method for both parts.

ImageUploadedByStudent Room1432588039.309833.jpg

Is this correct?


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Reply 596
Original post by Stepidermis
97 100 100 :smile: c1c2d1


How freaky. I got 97 100 100 C1, C2, M1.


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Original post by CD223
Ever so sorry, I thought you needed help with 3c and not 3b. Here's my method for both parts.

ImageUploadedByStudent Room1432588039.309833.jpg

Is this correct?


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Don't doubt yourself so much, you know it's correct :wink:


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Original post by Stepidermis
97 100 100 :smile: c1c2d1


100 D1, think I need to catch up on some graph theory!


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Reply 599
Original post by jjsnyder
Don't doubt yourself so much, you know it's correct :wink:


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Lol I make so many silly mistakes I always doubt myself :frown:


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