Top answers

All subjects
A Level

I'm struggling with an FP2 First-Order Differential Equations Question (Edexcel June 2009 Q3) and the topic in general!

(In terms of formatting, we'll use y' to represent dy/dx, exp() to represent the expoential e^(), int() to represent integration with respect to x, and 1ODE to mean First-Order Ordinary Differential Equat...

LB
6016 Views

Describe the differences between the primary and secondary immune responses in terms of B cells and antibody production. Include in your answer a definition of an antibody.

Antibodies are produced by B cells, mostly by plasma cells, in response to signals from other cells of the immune system. They are also known as immunoglobulins and have a Y shaped structure.

When ...

HB
Answered by Hannah B. Biology tutor
12038 Views

Describe the use of harmony and tonality to express a non-musical subject in Vivaldi’s The Four Seasons. Use detailed examples from at the movement 'Spring', whilst making comparisons with other movements.

The opening of the Spring concerto depicts the arrival of this joyous season through the bright key of E major. The basso continuo plays a tonic pedal to reinforce tonic and dominant harmony, typical of t...

GW
Answered by Gabrielle W. Music tutor
20398 Views

What is the chain rule? when do I have to use it?

The chain rule is the technique used for differentiation when the equation you're trying to differentiate contains a function of a function. Consider ln(x). You should know this differentiates to 1/x. If ...

AR
Answered by Alex R. Maths tutor
5087 Views

What is an advantage and disadvantage of oppertunity sampling?

Advantage: It is a quick and easy way of choosing participants for a study as it is based on convenience. Disadvantage: It may not be representative of the target population, potentially producing a sampl...

FR
Answered by Fae R. Psychology tutor
19276 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning