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The quadratic function f(x) = p + qx – x^2 has a maximum value of 5 when x = 3. Find the value of p and the value of q.

Express the quadratic equation using the formula that uses the vertex (x and y of the minimum/ maximum value). The formula is f(x)=a(x-h)^2 + k, where h=-b/2a and k=f(h). Now we have that a=-1 from the pr...

Answered by Rafik N. • Maths tutor

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what is the derivative of x?

Apply differentiation through first principles and understand the first principles to find the derivatives of common functions.

Answered by Yashvini S. • Physics tutor

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Cells go through a repeating cycle of events in growth regions such as plant root tips and animal embryos. Outline this cell cycle.

This cycle can be split into two big parts: the interphase and the dividing phase. The interphase consists of the G1, S and G2 phase. In the G phases the cell increases in size to prepare for the division...

Answered by Vasiliki K. • Biology tutor

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What are the differences between normal cells and cancer cells?

Cancer cells are not foreign cells, but abnormally functioning body cells, and may therefore escape immune detection, which is one of the reasons why they are so difficult to treat.

Here are some ...

Answered by Mariana N. • Biology tutor

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