how to find roots of equation having tan(x) or exp(x)

how to find roots of equation having tan(x) or exp(x)

I know how to calculate roots of polynomial having numerical values but i am stuck with it

Answer 1

[Wayne King]

Is it a polynomial, or an equation involving tan(x) and exp(x)?

Have you looked at fzero()?

For example, if you have the equation

y = tan(x) and you want find a root near 3

fzero(@tan,3)

Gives you the root at pi.

Answer 2

[Andrei Bobrov]

fzero(@(x)exp(x)+x-10,0)
fzero(@(x)tan(x)-x-.01,0)
fzero(@(x)tan(x)-x-.01,pi)

Answer 3

[moonman]

These are the equations

*exp(x)+x-10=0

and tan(x)-x-.01=0*

[Wayne King]

then fzero will work as I suggested.

fzero(@(x) exp(x)+x-10,0)

says "Find the zeros of exp(x)+x-10 near 0

Answer 4

[moonman]

Thanks king and andrei

This equation will calculate roots for tan in radians

what if i have taken x in degrees

how will i calculate roots

[Wayne King]

tand()

fzero(@tand,179)