Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,864

KerimF:

18th November 2023

May I add... as an extended exercise...

Prove that, for any value of k, the roots, x1 and x2, of the equation kx^2 + x + k = 0 satisfy x1=1/x2.

moved by Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 9,864

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

Pages: **1**