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# Melody

 Nombre de usuario Melody Puntuación 103689 Stats Preguntas 859 Respuestas 27307

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Melody  8 may. 2019
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### Congratulations CPhill on clearing the 100,000 hurdle !

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Melody  4 may. 2019
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Melody  9 mar. 2019
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### Happy Birthday ALAN

Melody  26 feb. 2019
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Melody  14 feb. 2019
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### If a question is ticked that does not mean you cannot continue it.

Melody  27 ene. 2019
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### Happy Birthday CPhill!

Melody  19 dic. 2018
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Melody  1 dic. 2018
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### Try something new - Expansion challenge.

Melody  18 sept. 2018
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### Interesting puzzle clip

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Melody  18 may. 2018
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### Should you consider anything before you answer a question?

Melody  13 may. 2018
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Melody  7 feb. 2018
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### Happy Birthday Heureka

Melody  1 feb. 2018
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### A trig exact ratio memory trick.

Melody  23 ene. 2018
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Melody  13 ene. 2018
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7 jul. 2019
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Here is the graph

Using the graph can you see what the answer is?

You also need to be able to work these out without graphing first (it is good to graph afterwards for checking you answer)

X^2 is always going to be positive.

x can't be 1

Do you know how to use calculus Tom?

If so it is easy just to differentiate and then set y'=0 to find the stationary points etc.

7 jul. 2019