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What is differentiation and how is it done?

Differentation is a type of calculus that allows us to work out the rate of change. For example, if we have a straight line graph such as y=2x, we know that the gradient of the line is 2. If we take a ...

Answered by Megan P. • Maths tutor

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What is an unsaturated hydrocarbon?

Unsaturated hydrocarbons contain at least one carbon carbon double bond, the simplest is the alkene. They are more reactive than saturated hydrocarbons because they have the ability to...

Answered by Chloe A. • Chemistry tutor

16300 Views

How do you know whether to use the imperfect or perfect tense?

The perfect tense is used to for completed actions in the past. For example, le semaine dernier je suis allé en France would translate to last week I went to France. The imperfect is used for incomplet...

Answered by Megan P. • French tutor

5714 Views

How do you construct the perfect tense for verbs that take avoir?

The perfect tense is used to describe an action or event that occurred in the past. For example, you would use the perfect tense to express the phrase "I played football yesterday"

Answered by Megan P. • French tutor

3424 Views

How do you convert a number from denary to hexadecimal?

The simplest route to take when converting any number from denary to another number system is to first convert it to binary. The method for binary conversion is to divide the number in question by 2 repea...

Answered by Josh C. • Computing tutor

37297 Views