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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 probl...
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Answered by Rafik N. • Maths tutor
13200 Views

I feel like I understand the concept, why I am I still not getting full marks on the question?

Understanding concepts in exams is only part of the battle. To improve your marks you need to improve your exam technique! For example: Have you correctly interpreted what the question is asking of you? Is y...
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Answered by Tom R. • Biology tutor
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What is the difference between nominative, accusative and dative?

The nominative, accusative and dative are cases: they affect adjective endings and the article used for a noun. The nominative is used for the subject, the noun which is carrying out the action. In the sente...
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Answered by Alice H. • German tutor
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What is the subjunctive?

The subjunctive is a 'mood', like a tense, it changes the conjugation of the verb. It is used after certain phrases such as 'il faut que' (it is necessary that) and bien que (although) e.g. 'il faut que j'y ...
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Answered by Alice H. • French 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.
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Answered by Yashvini S. • Physics tutor
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