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Consider the function f(x) = 2/3 x^3 + bx^2 + 2x + 3, where b is some undetermined coefficient:

a) Find f ' (x) and f ''(x). f' = 2x 2 + 2bx + 2f'' = 4x + 2bb) You are given that f(x) has a stationary point at x = 2. Use this information to find b.2x 2 + 2bx + 2, x=2Stationary point is when f' = 02(2) ...
CP
Answered by Charlie P. • Maths tutor
4104 Views

How do I answer a long answer question so that I get all of the marks?

Long answer questions (6+ marks) can normally be split into 3 marks for basic content and 3 marks for reasons. Long answer questions will also be assessed on quality of written communication - this means how...
JA
Answered by Jenny A. • Biology tutor
3655 Views

Why is Phenol more reactive than Benzene in electrophilic substitution reactions?

Phenol has the -OH group and the oxygen has a lone pair of electrons which are donated into the Benzene ring and activate the ring which make it more susceptible to attack by electrophiles. This means Phenol...
JO
Answered by Juliet O. • Chemistry tutor
11870 Views

Integrate 4/x^2

First of all, I would ask the tutee if they were familiar with the law of integration. i.e. that you increase the power of the variable (x) by 1, then divide by the new power, and if not then I would clarify...
AE
Answered by Ahmed E. • Maths tutor
5960 Views

How would you interpret the meaning and message of this quote from J.B Priestley's 'An Inspector Calls'?

'GIRLS OF THAT CLASS' Breakdown of the sentence into its key lexical, semantic and grammatical elements: 'Girls': The use of the concrete noun 'girl' in place of the proper noun 'Eva' suggests a sense of dis...
MK
Answered by Matthew K. • English tutor
66046 Views