Constructing a model

[carmine basin]

I dont get how to do 3b and 4

[stable forum]

You have to set h=4

@carmine basin

4=2+1.1x-0.1x

-4 on both sides

Use the quadratic formula

@carmine basin

[stable forum]

But first u can multiply all sides by 10

X=11+-radical 201/2

Part b:
Do the same thing but let h=3 so

3=2+1.1k-0.1k^2

Minus 3 on both sides

Multiply by 10

K= 11+-radical 161/2

C. The model is not valid for x > k because the equation assumes the basketball is being shot towards a net located at a horizontal distance of k from the player. If the basketball travels beyond the net (x > k), the model no longer accurately represents the motion of the basketball passing through the net.

[carmine basin]

ohh alright

[stable forum]

solved?

[carmine basin]

so you basically solve for k by solving the quadratic??

[stable forum]

Exactly

[carmine basin]

ohhh

i got confused because of the horizontal distance of the net from the player thing

[stable forum]

yaa thats tricky

R u IB?

[carmine basin]

no, A Level Maths

[stable forum]

oh nvm

[carmine basin]

lol

have u heard of it?

[stable forum]

Yes but looked like an ib book lol

[carmine basin]

oh lol, this is pearsons edexcel A Level Maths stats and mechanics textbook

theres also another one for pure maths

[stable forum]

ohhhh

[carmine basin]

yup

[carmine basin]

wait so yk how u got this

instead of x you write k?

[stable forum]

Yes

Bc k i the horizontal distance

“Horizontal”

@carmine basin

[carmine basin]

ohh alright

I got K = 1 and K = 10

ill show u my working out wait