print statements now compatible with Python 3

...mentals-differentiation/completed/LocDifferentiation2D.py

...mentals-differentiation/completed/StdDifferentiation1D.py

...mentals-differentiation/completed/StdDifferentiation2D.py

...amentals-differentiation/tutorial/LocDifferentiation2D.py

...amentals-differentiation/tutorial/StdDifferentiation1D.py

...amentals-differentiation/tutorial/StdDifferentiation2D.py

...on/fundamentals-integration/completed/LocIntegration2D.py

...on/fundamentals-integration/completed/StdIntegration1D.py

...on/fundamentals-integration/completed/StdIntegration2D.py

...ion/fundamentals-integration/tutorial/LocIntegration2D.py

...ion/fundamentals-integration/tutorial/StdIntegration1D.py

...ion/fundamentals-integration/tutorial/StdIntegration2D.py