A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
For Problem Set 2, the derivative program, I am confused about how the solution returns the correct answer:
poly_deriv = []
if len(poly) < 2:
return [0.0]
for j in xrange(1, len(poly)):
poly_deriv.append(float(j * poly[j]))
return poly_deriv Specifically, where in the code does the program reduce the exponent by 1?
anonymous
 one year ago
For Problem Set 2, the derivative program, I am confused about how the solution returns the correct answer: poly_deriv = [] if len(poly) < 2: return [0.0] for j in xrange(1, len(poly)): poly_deriv.append(float(j * poly[j])) return poly_deriv Specifically, where in the code does the program reduce the exponent by 1?

This Question is Open

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We would express the polynomial \(x^2+4x+5\) would be expressed as ``` [5.0, 4.0, 1.0] ``` The derivative polynomial \(2x+4\) would be expressed as ``` [4.0, 2.0] ``` Due to the fact that `xrange(1, len(poly))` will iterate starting at `1`, the constant term at `0` is skipped, and all of the terms are shifted over. This shift is equivalent to reducing the exponent.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.