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# intl

Cauchy integral

### Calling Sequence

`[y]=intl(a,b,z0,r,f)`

### Arguments

z0

a complex number

a, b

two real numbers

r

positive real number

f

"external" function

### Description

If `f` is a complex-valued function, `intl(a,b,z0,r,f)` computes the integral of `f(z)dz` along the curve in the complex plane defined by `z0 + r.*exp(%i*t)` for `a<=t<=b` .(part of the circle with center `z0` and radius `r` with phase between `a` and `b`).

### Examples

```function y=f(z)
y = z^(3 + %pi * %i)
endfunction

intl(1,2,1+%i, 3, f)```

### See Also

• intc — Cauchy integral

### Comments

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