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OCR C2 2015 Question 8: (a) Use logarithms to solve the equation 2^(n-3) = 18,000 , giving your answer correct to 3 significant figures. (b) Solve the simultaneous equations log2(x) + log2(y) = 8 & log2(x^2/y) = 7.

(a) This question actually tells us what to do . It is very hard to miss " use logarithms to solve... ". So our first step is going to be to use logs (especially as we can also see that is very lit...
JH
Answered by Jonathan H. • Maths tutor
8243 Views

How has the role of TNCS aided development in poorer countries?

TNCs, or transnational corporations, are companies who have bases in countries other than their "home" or origin country (e.g. Apple, a major global TNC, has its headquarters primarily based in Cal...
KT
Answered by Kate T. • Geography tutor
13437 Views

To what extent was the fear of absolutism responsible for the difficulties faced by the English monarchy in the years 1678-1688

I would begin by asking the student to break down the question. First, identify that the question is asking 'To what extent', so requires an evaluative answer such as, 'To some extent' or a definite Yes/No. ...
JL
Answered by Joanna L. • History tutor
3675 Views

How do you integrate sin(3x)cos(5x)?

STEP 1 Cannot integrate directly in this form, therefore use a trigonometric identity. Identity: sin(A) + sin(B) = 2sin((A+B)/2)cos((A-B)/2) STEP 2 (A+B)/2 = 3x A + B = 6x (1) (A-B)/2 = 5x A - B = 10x (2) ST...
CF
Answered by Catherine F. • Maths tutor
8943 Views

What are the differences between the two long term memory systems of procedural and episodic memory?

Long term memory has been divided into two distinct memory subsystems, which are declarative (explicit, conscious) memory, and non-declarative (implicit, unconscious) memory. Procedural memory is an example ...
AM
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