CertNexus AIP-210 Exam - Topic 5 Question 50 Discussion

Actual exam question for CertNexus's AIP-210 exam

Question #: 50
Topic #: 5

[All AIP-210 Questions]

Which of the following equations best represent an LI norm?

A|x| + |y|

B|x|+|y|^2

C|x|-|y|

D|x|^2+|y|^2

Show Suggested Answer

Suggested Answer: A

An L1 norm is a measure of distance or magnitude that is defined as the sum of the absolute values of the components of a vector. For example, if x and y are two components of a vector, then the L1 norm of that vector is |x| + |y|. The L1 norm is also known as the Manhattan distance or the taxicab distance, as it represents the shortest path between two points in a grid-like city.

by Leslie at Nov 22, 2025, 08:38 PM

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Marcelle

3 days ago

D) |x|^2 + |y|^2 is a common mistake. It's not an LI norm.

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Cherry

8 days ago

B) |x| + |y|^2 seems off. The squared term doesn't belong.

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Tashia

13 days ago

Agreed! A is simple and straightforward.

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Marion

19 days ago

I thought |x| + |y|^2 could work too, but I guess not?

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Ulysses

24 days ago

Wait, how is A the only one? What about D?

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Jeffrey

29 days ago

B and D are not norms, just saying.

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Cathrine

1 month ago

Totally agree, A is the only one that fits!

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Galen

1 month ago

A) |x| + |y| is the correct LI norm.

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Zona

2 months ago

Option A is the way to go, the other choices are just trying to trick us.

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Viola

2 months ago

B has that weird exponent on the y term, that's not an L1 norm.

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Destiny

2 months ago

C can't be correct, the L1 norm doesn't involve subtraction.

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Brandon

2 months ago

I'm going with D. The sum of the squares of the absolute values is the L2 norm, right?

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Lai

3 months ago

Option A looks good to me. The absolute value of x plus the absolute value of y seems like a classic L1 norm.

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Socorro

3 months ago

I’m really torn between A) and D). I know one of them has to be right, but I can't recall the exact definition of an LI norm.

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Ira

3 months ago

I feel like I saw a similar question in practice, and it was about summing absolute values. A) seems like a strong candidate.

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Teresita

3 months ago

I'm not entirely sure, but I remember something about norms being related to distances. Could it be D) |x|^2 + |y|^2?

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Norah

3 months ago

I think the LI norm is related to the absolute values, so maybe it's A) |x| + |y|?

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Florinda

3 months ago

The L1 norm is the sum of the absolute values, right? So I'm going to go with A) |x| + |y|. I feel good about that choice.

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Malcolm

4 months ago

I remember learning about the different Lp norms, but I'm having trouble remembering the specifics. I think the L1 norm is the sum of the absolute values, but I'm not 100% sure. I might have to guess on this one.

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Angelica

4 months ago

Okay, I'm pretty confident that the L1 norm is the sum of the absolute values. So I'm going to go with A) |x| + |y|.

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Mozell

4 months ago

I think A) |x| + |y| is the right choice. It fits the LI norm definition.

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Audry

5 months ago

C) |x| - |y|? No way! That's not even a norm.

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Melissa

5 months ago

I'm a bit confused on this one. I know the L1 norm is supposed to be the sum of the absolute values, but I'm not sure if that's the same as the equations given here. I might need to review my notes on norms.

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