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To calculate the uncertainty in the area under a graph, we use the formula for propagation of uncertainties.

When finding the area under a graph, we are essentially calculating the integral of the function. To find the uncertainty in this integral, we use the formula for propagation of uncertainties. This involves finding the derivative of the function and multiplying it by the uncertainty in the independent variable. We then integrate this product over the range of the independent variable.

For example, if we have a graph of displacement against time and we want to find the uncertainty in the area under the graph, we would first find the derivative of the displacement function with respect to time. We would then multiply this by the uncertainty in time and integrate over the time range. The result would give us the uncertainty in the area under the graph.

It is important to note that the uncertainty in the area under a graph depends on the uncertainties in both the dependent and independent variables. Therefore, it is important to accurately measure and record both variables to minimize the uncertainty in the final result.

Overall, calculating the uncertainty in the area under a graph involves using the formula for propagation of uncertainties and accurately measuring and recording the variables involved.

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