
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Calculate the mass of the material segment \( A B \), given \( A(-2,1,0) \) and \( B(-1,3,5) \), where the density at each point \( M \) on the segment is proportional to the distance from \( M \) to \( A \) with a proportionality coefficient \( k \).

Present the answer in LaTex format: \boxed{Your answer}
user