Any good math extension 1 questions (2 Viewers)

[petermik]

Every question is boring me to tears . so repetitive, can you suggest any good binomial, probability and such questions that I can practice and learn off.

 

[RealiseNothing]

2000 question 7 is pretty decent imo.

 

[lolcatss]

2000 question 7 is pretty decent imo.

Hey I wanted to ask, for 7a.i why does the solution say to derive dF/du, If F is litres/hour, what would deriving it give you?

 

[RealiseNothing]

Hey I wanted to ask, for 7a.i why does the solution say to derive dF/du, If F is litres/hour, what would deriving it give you?

You have the fuel used per hour (F) in terms of the speed (u). Deriving to get dF/du and letting it equal 0 just lets you minimise the amount of fuel used per hour in terms of what speed you should be flying at.