Math Is Fun Forum

{7/3}

Member

Registered: 2013-02-11

Posts: 210

Hello!

Hello,I am a new user.I am a curious boy,if I see something new I try to learn about it.I intend to learn and help about math from this forum,thank you for your time.May all your lives' second differential be negative.

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There are 10 kinds of people in the world,people who understand binary and people who don't.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Hello!

Hi {7/3};

Welcome to the forum!

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Hello!

hi {7/3}

Welcome to the forum.

May all your lives' second differential be negative.

Are you sure?  I think that means it's all down hill from here.   

Bob

Last edited by Bob (2013-03-05 09:05:10)

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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

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Hello!

Hi {7/3}

Welcome to the forum!

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“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

{7/3}

Member

Registered: 2013-02-11

Posts: 210

Re: Hello!

I meant,if first derivative is 0 and second derivative is -ve the point is local mamimum.Also if 2nd derivative is -ve for any x,y and z between them,(z,f(z)) is over the secant line of (x,f(x)) and (y,f(y)).

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There are 10 kinds of people in the world,people who understand binary and people who don't.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Hello!

hi {7/3}

How are you today?

Doesn't it depend on where the points x, y, and z lie?

Bob

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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