Difference between revisions of "Intermediate Value Theorem"

Revision as of 15:44, 16 February 2008

Bolzano's intermediate value theorem is one of the very interesting properties of continous functions.

Let $f:[a,b]\righarrow\mathbb{R}$ (Error compiling LaTeX. Unknown error_msg)

Let $f$ be continous on $[a,b]$

Let $f(a)<k<f(b)$

Then, $\exists c\in (a,b)$ such that $f(c)=k$

Consider $g:[a,b]\rightarrow\mathbb{R}$ such that $g(x)=f(x)-k$

note that $g(a)<0$ and $g(b)>0$

By Location of roots theorem, $\exists c\in (a,b)$ such that $g(c)=0$

or $f(c)=k$

QED

Revision as of 10:19, 15 February 2008 (view source) Shreyas patankar (talk \| contribs) (New page: '''Bolzano's intermediate value theorem''' is one of the very interesting properties of continous functions. ==Statement== Let <math>f:[a,b]\righarrow\mathbb{R}</math> Let <math>f</math>...)	Revision as of 15:44, 16 February 2008 (view source) Temperal (talk \| contribs) m (Bolzano's intermediate value theorem moved to Intermediate Value Theorem) Newer edit →
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