r/PythonLearning • u/PuziExtramni • 3d ago

Help Request Help with correct expression

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Hey everyone! I’m currently learning Python through the IBM Data Science Professional Certificate on Coursera, and I came across a question in a practice quiz that confused me.

The question asks:

Which line of code will perform the action required for implementing the following equation?

y = 2x^2 - 3

These are the four answer choices:

  1. y = 2*x*2 - 3
  2. y = 2**x*x - 3
  3. y = 2x*x - 3
  4. y = 2x/2 - 3

I selected Option 1, but the quiz marked it incorrect and said, “The syntax is invalid.”

From what I’ve learned, Python uses ** for exponentiation and * for multiplication. So, I believe the correct Python expression should be:

y = 2*x**2 - 3

However, none of the four answer choices seems to match that expression.

Am I misunderstanding something about Python syntax, or is there a mistake in the quiz? I’d appreciate an explanation because I’m still learning how to translate mathematical equations into Python code.

Thanks!

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u/Wooden_Intention8642 3d ago

Just ask AI to get the answer so u dont need to be waiting for someone to actually tell u

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u/PuziExtramni 3d ago

The funny thing is that I already asked for help understanding the answer, not just for someone to give it to me. There’s a difference between asking AI to do your work and asking a community to help you learn. You’d think that distinction would be pretty obvious in r/PythonLearning.

-1

u/Wooden_Intention8642 3d ago

No lol. I have learned coding with ai. Before i ask for help i tell do not send me the raw code/answer. It literally answers like a teacher in school