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How to differentiate using the chain rule

The chain rule is a rule of differentiation that states: (f(g(x))'=f ' (g(x))g'(x) In effect, the chain rule allows us to split up a complicated equation into smaller more manageable chunks. Rather than diff...
AT
Answered by Anthony T. • Maths tutor
4245 Views

Simplify: 3(x+5)-4(2x+1)

This is a simple question where students need to use BIDMAS to solve the equation. The easiest method is to seperate the two sides and solve individually, then combine. Firstly, 3(x+5) multiplies out to give...
MK
Answered by Magdalena K. • Maths tutor
7237 Views

Anna has 6 bananas. Ben has 2.5 times more bananas than Anna. Callum has a third as many bananas as Anna and Ben have together. How many bananas do Anna, Ben and Callum have together?

Anna: 6 bananas. Ben: 6*2.5 = 15 bananas. Callum: (6+15)/3 = 7 bananas Altogether they have 6 + 15 + 7 bananas = 28 bananas
AM
Answered by Avani M. • Maths tutor
3463 Views

How do I know which calculation to do first in questions with multiple operations (e.g. 2 x 3 - 2 x 5)?

In these situations, we can use an acronym called "BIDMAS". BIDMAS stands for: "brackets", "indices", "division", "multiplication", "addition" and ...
DM
Answered by Dalitso M. • Maths tutor
8071 Views

Solve this equation x^2 +4x - 5

Have you seen anything like this before? What do you understand by this equation? How do you expand brackets? Grid/smiles and eyebrows How confident are you with factors and times tables? How is a square num...
ZM
Answered by Zeenat M. • Maths tutor
4063 Views