hw2 problem:
1. login with wrong userID
2. make wrong dir: mkdir /hw2 vs mkdir hw2
3. dir vs file
4. vi
5. run it

#!/usr/bin/env python
x = input("x: ")
fx=9*x*x+8*x+7
print("9x^2 + 8x + 7= %d" % fx)

hw2
f(x,y)=2x^2y + 3y^2 + xy + 1 when (x,y)=(0,0) f(x,y)=1

chatGPT x^y