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This is the simplest demonstration of the "code" part type I could think of: assign x = 1.

An alternative answer gives a hint if the studen'ts code doesn't define x at all.

This question defines an otherwise-pointless pre-submit task of "wait for a while" before marking the student's answer, in order to demonstrate how to use the pre-submit tasks feature.

This is a test

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Solve equations involving logs and exponential functions, by using inverse operations.

Solve equation involving logarithmic function.

Solve equation involving logarithmic function.

Solve equation involving exponential function.

Solve equation involving exponential function