2008 CSSA volumes query (1 Viewer)

[5647382910]

http://au.geocities.com/ext2papers/

I've got an issue with q 3) c) i) 2008 CSSA

I dont understand why - x is added isntead of x for the y value of the function x + y = 0. Why isn't the area of the sqaure (2sqrtx + +x)^2 ?
Arent we dealing with distances????

Im sorry if this is is a stupid q, help would be VERY MUCH appreciated

 

[Top Secret]

http://au.geocities.com/ext2papers/

I've got an issue with q 3) c) i) 2008 CSSA

I dont understand why - x is added isntead of x for the y value of the function x + y = 0. Why isn't the area of the sqaure (2sqrtx + +x)^2 ?
Arent we dealing with distances????

Im sorry if this is is a stupid q, help would be VERY MUCH appreciated

Your right. The area of the square is (2sqrtx + l-x l )^2. Expand to get answer.

 

[5647382910]

Your right. The area of the square is (2sqrtx + l-x l )^2. Expand to get answer.

upon expanding i get 4x + x^2 + 4x^3/2

different from what was required to be proven

 

[Top Secret]

upon expanding i get 4x + x^2 + 4x^3/2

different from what was required to be proven

Nah, it's the same. Though there seems to be an error in the exam, and looks like someone's fixed it up. (Referring to exam from the link.)

 

[5647382910]

Nah, it's the same. Though there seems to be an error in the exam, and looks like someone's fixed it up. (Referring to exam from the link.)

GRRRRR! DAMN YOU CSSA!!!

thanks for your help

 

[Top Secret]

thanks for your help

No problem. Here to help. XD