Consider the following steps: 
1. Invert the stiffness matrix to determine the nodal temperature values.

2. Plot the temperature contours using nodal temperature values.
Steps 1 and 2 take the same amount of time.
Step 1 takes a longer time than step 2.
Step 1 takes a shorter time than step 2.

(To see the answer, go to the 2D Conduction section of Module 1 in

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Heat Flux Vectors

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Probe Temperature

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Temperature Along a Line

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