Top answers

Q4 on 2017 Edexcel C4 paper, concerns differentiation of multiple variables.

(a) Asks to differentiate an equation C: 4x 2 - y 3 - 4xy + 2 y = 0Then use the fact that point P (-2,4), lies on C to find an expression for dy/dx Differential of form 8x - 3y 2 (dy/dx) - (4y + 4x(dy/dx)) +...
AW
Answered by Alexander W. • Maths tutor
3869 Views

In Scene IV of the Poker Night in Tennessee Williams' A Streetcar Named Desire, what is the significance of the use of primary colours in the setting of the Kowlaski Apartment?

In the Scene of the Poker Night in A Streetcar Named Desire, the opening description of the living room as being romanticised by ‘primary colours’ is in stark contrast to the description of New Orleans in th...
EA
5878 Views

What would be the effect on the UK Economy of an increase in the Bank of England Base Rate?

AD=C+I+G+X-M1) Increased cost of borrowing-Consumption Variable rate mortgages will now have higher monthly interestrepayments. This leads to a decrease in disposable income for consumers.Consumers will ther...
AN
Answered by Alex N. • Economics tutor
2419 Views

The complex numbers Z and W are given by Z=3+3i and W=6-i. Giving your answers in the form of x+yi and showing how you clearly obtain them, find: i) 3Z-4W ii) Z*/W

i) 3Z-4WFor this question it is just the matter of substituting the complex numbers of Z and W into the equation. So, 3(4+3i)-4(6-i). Then multiply out the brackets to get 12+9i-24+4i. Finally simply to get ...
JB
Answered by James B. • Maths tutor
7637 Views

State the 4 stages of mitosis (2 marks)

Prophase, Metaphase, Anaphase and Telophase
BM
Answered by Becky M. • Biology tutor
3134 Views