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Find the gradient of a curve whose parametric equations are x=t^2/2+1 and y=t/4-1 when t=2

Remember that the gradient of a curve is expressed as dy/dx. This can be solved by using the chain rule: dy/dx = dy/dt*dt/dx. The dt in the denominator of the first term, and the numerator of the second term...
AS
Answered by Abigail S. • Maths tutor
9612 Views

How do I choose where I should apply?

Choosing which University to apply to is not as random as it seems. There are multiple factors that you must consider. Most importantly, your strengths and weaknesses. If your UKCAT is your strong point, cho...
HB
2863 Views

Name the 5 stages of mitosis in order

I remember using this handy mnemonic: "IPMAT". I nterphase P rophase M etaphase A naphase T elophase It may be useful to you to write this down straight away on an extra piece of paper at the start...
LR
Answered by Luke R. • Biology tutor
8011 Views

What mass of carbon dioxide is produced from burning 100 grams of ethanol in oxygen according to this reaction: C2H5OH + 3 O2 --> 2 CO2 + 3 H2O

When approaching a question like this I always find it easier to write out the equation with the known quantities written underneath each individual compound. This allows us to easily check whether the equat...
KM
28974 Views

Q: How to solve the simultaneous equations 3x+2y=7 and 5x+y=14

When solving simultaneous equations you are aiming to use both equations together to find out the value of x and y for values that with ‘fit’ in each equation. 3x + 2y = 7 5x + y = 14 If we subtract these eq...
KM
Answered by Katherine M. • Maths tutor
12585 Views