Some solutions? (1 Viewer)

[zahmad]

"Use one application"....so 3 function values?, why this is so?
And Q9...who is right?....P.S First month no interest right?
Also need Q9B....

 

[Timothy.Siu]

"Use one application"....so 3 function values?, why this is so?
And Q9...who is right?....P.S First month no interest right?
Also need Q9B....

because one application means 3 function values ur applying the simpsons rule once
yeah first month no interest i'll see wat 9b is

 

[lyounamu]

lol nah thats rⁿ -1 not r^n-1 :uhhuh:

Lol, you are right.

I used 0.1 as a rate so I am wrong. It's funny how I mixed my rate up with some random questions that I was doing - lol.

Never do 2 questions simulatenously - this is what happens!

 

[lyounamu]

Namu, are you doing 4U next year?

Yep. But the chance of dropping out is quite high.

 

[Timothy.Siu]

Lol, you are right.

I used 0.1 as a rate so I am wrong. It's funny how I mixed my rate up with some random questions that I was doing - lol.

Never do 2 questions simulatenously - this is what happens!

lol yay =)
anyway i did 9B
once u know the intersections u can sub in the values and u get simultaneous equations
4=a/2 1=a/8 from any one of those u get a=8
from the line u get 4=2m+b and 1=8m+b
b=1-8m sub it into the first one 2m+1-8m=4 m=-1/2 b= 5
now u got ur equations y=8/x and y= -1/2x+5

then u integrate them to find the area
from 8 to 2 S (-1/2x+5-8/x)dx = [-x^4/4+5x-8ln x] 8 to 2
= -16+40-8ln 8 - (-1+10-8ln 2)
= 15 - 8ln8+8ln 2
= 15 - 24ln 2 +8ln 2=15-16ln 2 QED

 

[lyounamu]

lol yay =)
anyway i did 9B
once u know the intersections u can sub in the values and u get simultaneous equations
4=a/2 1=a/8 from any one of those u get a=8
from the line u get 4=2m+b and 1=8m+b
b=1-8m sub it into the first one 2m+1-8m=4 m=-1/2 b= 5
now u got ur equations y=8/x and y= -1/2x+5

then u integrate them to find the area
from 8 to 2 S (-1/2x+5-8/x)dx = [-x^4/4+5x-8ln x] 8 to 2
= -16+40-8ln 8 - (-1+10-8ln 2)
= 15 - 8ln8+8ln 2
= 15 - 24ln 2 +8ln 2=15-16ln 2 QED

He didn't ask for 9b though.

What a dilligent worker you are~

Edited...

 

[Timothy.Siu]

She didn't ask for 9b though.

What a dilligent worker you are~

he did (how did u get a she) !!! just not in the OP

 

[lyounamu]

he did (how did u get a she) !!! just not in the OP

Ah, sorry. When I typed my post, only thing that I could think of was his avatar...

 

[Timothy.Siu]

Ah, sorry. When I typed my post, only thing that I could think of was his avatar...

lol i still dont get a she from the avatar.

 

[zahmad]

LOL! Thats a caveman.....! Stressed out ? Thanks all!