FAQ: Lambda Function Code Challenge - Double Square

This community-built FAQ covers the “Double Square” exercise from the lesson “Lambda Function Code Challenge”.

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This exercise can be found in the following Codecademy content:

FAQs on the exercise Double Square

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I don’t undestand the solution provided for this exercice :
here the solution :
double_square = lambda num: 2 * num * num

print double_square(5)
print double_square(3)

results provided are 25 then 9

but with that formula if input is 5 you should compute 2 * 5 * 5 so 50 not 25 ??

2 Likes

Please post a link to the challenge in question.

https://www.codecademy.com/paths/analyze-data-with-python/tracks/ida-2-introduction-to-python/modules/ida-2-5-lambda-functions/lessons/lambda/exercises/double-square

I am late to the party, may be there it is better they emphasize the wording “The function should return twice the square of” as it easily missed by skimmers like us. May be that could be the intention :roll_eyes: :crazy_face:

So we are now expecting the authors to consider ‘skimmers like us?’ Even skimming gets the message clear unless one skips right over it. There is definitely enough information to work with. How does one make it more explicit without more superfluous verbosity?