python matplotlib example code.

question1_19.py

from pylab import *

#create the function q(t) based on the question                                                                                                                                                                                          
def q(t):
    if t < 0:
        return 0
    if t <= 10:
        return 5 * t
    if t <= 60:
        return 60  - t


def q_array(t_array):
    return [q(dt) for dt in t_array]


t_array = arange(0.0, 60.0, 1.0)
s = q_array(t_array)
plot(T,s)
xlabel('time - t (s)')
ylabel('charge - q (mC)')
grid(True)
savefig('question1_19.png')
show()