Top answers

How do you differentiate y=sin(cos(x))?

To solve this question we will use the chain rule, as we can see that we have one function being applied to another, i.e sin is being applied to cos(x). This means we are able to replace the original functio...
MP
Answered by Marcel P. • Maths tutor
19341 Views

Differentiate y=4x^2+3x+9

Use the rule of "bringing down the power" and then reducing the power by 1. Start with 4x^2. "Bring down" the 2 to make (4)(2)x^2, then reduce the power by 1 to make 8x. Now repeat this w...
TR
Answered by Tarryn R. • Maths tutor
6568 Views

What is the trend in atomic radius of the elements across Period 3 and why does this occur?

The atomic radius of the elements decreases from sodium to argon. This is because the number of protons increases (sodium has 11, argon has 18) so the nuclear charge increases. Therefore, the attraction betw...
CG
Answered by Chloe G. • Chemistry tutor
56471 Views

How can I improve my ability to write a good quality essay in the short time frame of my exam?

The answer is a combination of knowledge, structure, and practice. You are affectively aiming to achieve a mark for every minute of your exam which leaves little time for planning your answer. The key to ove...
SI
Answered by Sarah I. • History tutor
3404 Views

Describe how mRNA is produced within a cell

DNA is unwound by DNA helicase. This exposes the two strands of DNA, through the breaking of hydrogen bonds. This allows for complementary RNA nucleotides to join to one of the two strands - i.e. they are 'a...
KR
3149 Views