Help me with Maths igcse past papers.?
My final result was 5, but the answer says that it is 6.
I dont understamd why, could you pls explain or give me the working out?
- Φ² = Φ+1Lv 72 months ago
Let ϵ be a small positive number, near but not equal to 0
A = 10.5 - ϵ, so round(A) = 10 and h = 3.5, so round(h) = 4.
A = bh/2, so h = 2A/b = 2(10.5-ϵ) / 3.5 = 6 - 4ϵ/7
again ϵ is positive and very nearly 0, so A < 6 (the boundary / limit is 6)