6.189 Homework 2.3 Math Module

6.189 Homework 2.3 Math Module.py

### The following are my attempts at homework 2.3 for MIT 6.189 
###http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011/assignments/MIT6_189IAP11_hw2.pdf
### Everything here works, and evaluates correctly, but I'd love some feedback. 
### Particularly with understanding the intention behind the multadd method. 
### In a few of my examples I use it essentially just to generate a sum (multiplying said sum by one). 
### Is there a saavier way to use this, more in keeping with the spirit of the exercise? 

## 1 - multadd function
##### YOUR CODE HERE #####

import math

def multadd(a,b,c):
    return a*b+c

##tests....

print multadd(6,3,3), 6*3+3
print multadd(1,0,9), 1*0+9
print multadd(-1,0,-9), -1*0-9
print multadd(-1,30,-9), -1*30-9

## 2 - Equations
##### YOUR CODE HERE #####

angle_test = multadd(1,math.sin(math.pi/4),math.cos(math.pi/4)/2)
print angle_test

ceiling_test = multadd(1,math.ceil(276/19.0),2*math.log(12,7))
print ceiling_test


## 3 - yikes function
##### YOUR CODE HERE #####
def yikes(x):
    return multadd(x,math.exp(-x),math.sqrt((1-math.exp(-x))))

# Test Cases
x = 5
print "yikes(5) =", yikes(x)