We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into ...

This means we can simplify the formula to: Use the trapezium rule, with the values from the table to estimate the area under the curve between \(\text{x = 0}\) and \(\text{x = 8}\). Write out the ...

We like mechanical calculators like slide rules, but we have to admit that we ... which is a lens and mirror system that lets you precisely find a tangent line. You can read the angle and find ...