influence of meta parameter

``` python
import pylab as py

n = 1000
x_deg = py.linspace(0, 180, n)
x_rad = py.deg2rad(x_deg)
y = py.cos(x_rad)

def my_cos(x_deg):
return py.cos(py.deg2rad(x_deg))

num_int_0(my_cos, 0, 180, n, b_verbose=False)

n_array = py.logspace(1, 3)
y_list = []
for n in n_array:
y_list.append(
num_int_0(my_cos, 0, 180, int(n), b_verbose=False)
)

py.semilogx(n_array, y_list, '.')
```