The image you provided contains the following problem:

"What is the area under the curve between $z = -1$ and $z = 2$?"

To solve this problem, we typically need the equation of the curve (function) that we are integrating. If the function is provided elsewhere in the problem or context, we can use it to compute the definite integral from $z = -1$ to $z = 2$.

If you have the equation of the curve, please provide it. Otherwise, please confirm if the function is given, or if there’s additional information that might help me assist you better.

Would you like to share any additional details or ask any specific questions related to this problem?

Relative questions:

1. What is the function of the curve involved in this problem?
2. Are there any special conditions or constraints on the curve?
3. Would you like to review the steps for computing a definite integral?
4. Do you need help finding the antiderivative of a specific function?
5. Is there any context or application for this problem, like in physics or economics?

Tip: When solving definite integrals, always double-check the limits of integration and the function's formula to avoid errors.