Search our library of A Level questions

Top answers

All subjects

A Level

A curve passes through the point (4, 8) and satisfies the differential equation dy/dx = 1/ (2x + rootx) , Use a step-by-step method with a step length of 0.3 to estimate the value of y at x = 4.6 . Give your answer to four decimal places.

h dy/dx (4) = 0.03y(4.3) = 8+0.03 = 8.03y(4.6) = y(4.3) + 0.3 dy/dx(4.3) = 8.0581 to 4 d.p

3747 Views

Describe how the guard cells surrounding the leaf pores are adapted to their role

unevenly thickened cell wall able to change shape / bendtransport proteins / ion pumps, in plasma membrane(presence of) chloroplasts (to provide, ATP / energy)

Answered by Faiza R. • Biology tutor

5035 Views

What makes a good essay?

A good essay always starts with a good plan. It is obvious to a reader/examiner whether or not the writer has put in time to plan. This does not only mean that the writer has thought about the ideas they ...

Answered by Lucinda N. • English tutor

1895 Views

Express 2(x-1)/(x^2-2x-3) - 1/(x-3) as a fraction in its simplest form.

The answer is 1/(x+1)I began by factorising the denominator of the first fraction:2(x-1)/(x^2-2x-3) - 1/(x-3) = 2(x-1)/(x-3)(x+1) - 1/(x-3) Next, I multiplied both the numerator and the denominator of the...

Answered by Devan R. • Maths tutor

9259 Views

'It is rarely good for us to get what we want' In the light of this view, consider ways in which writers portray appetites and desires, and their consequences. In your answer, compare one drama text and one poetry text from the above lists.

The following picture details my A Level English Literature examination results: https://gyazo.com/fac9fef7b47e8f901621f0d13d4cb03c

Both Ford and Blake similarly corroborate the notion that des...

Answered by Kaleem B. • English tutor

2347 Views