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Does the function y=x^3+x+(x^2+1)e^x have a horizontal tangent?

We want to determine whether a function has a tangent which is horizontal. To answer the question we need to know what a horizontal tangent to a function means. A tangent to a graph of a function is a line w...
DE
Answered by Daniel E. • Maths tutor
6927 Views

How would you structure a 12 mark question?

There's no set structure as to answer the 12 mark question, but there is an easy way to get you in the hang of it. Firstly you would introduce the question and give some background of the question. Then the ...
KC
12376 Views

Is there an easy formula for creating compound tenses?

For your French GCSE you will be expected to be able to recognise and create two compound tenses: the perfect tense and the pluperfect tense. The perfect tense is used to describe a single completed action i...
GR
Answered by Georgina R. • French tutor
6879 Views

Solve the simultaneous equations: y=5-x and y=x+1.

Since y is equal to both 5-x and to x+1, we know that 5-x is equal to x+1. We can write 5-x=x+1. Take 1 away from each side: 4-x=x. Then add x to each side: 4=2x. Divide both sides by 2: 2=x. Now we have x, ...
CW
Answered by Charlotte W. • Maths tutor
19642 Views

Work out 51% of 400? (No calculator)

Finding 51% of 400 is the same as finding 50% of 400, and 1% of 400, and adding them together. Finding 50% of a number is the same as finding half of the number, since half of 100% is 50%. Half of 400 is 200...
CW
Answered by Charlotte W. • Maths tutor
26817 Views