Symbolic Computing Day 11

[xinyushi]

Hello Professor,

For the exercises, here are my solutions:

1. Function: x^(-2) and integrate from 1 to infinity
   sym.integrate((x)**(-2), (x, 1, oo))

2. Find a value of x where sin(x) = cos(x)

from sympy.solvers import solve
from sympy import *
x = Symbol('x')
solve(sin(x)-cos(x),x) 

I found two typos in the lecture notes:

We can calso factor an expression that has been expanded:
"calso" should be ‘also’

The default precition is 10 decimal digits
“precition” should be “precision”