Exam Technique - C3

Question 1

What is it important to consider for reflections when identifying orders of trans?

Answer 1

Has x or y been changed, not which axis they have been reflected in

Question 2

What happens when there is a reflection in the y axis?

Answer 2

x => -x

Question 3

What happens when there is a reflection in the x axis?

Answer 3

y =>-y

Question 4

When solving equations involving 2x, how do you ensure you don’t miss values?

Answer 4

Solve the equation using a modified range to find all solutions for 2x, then halve all values

Question 5

How do you solve sin^2(x)=3?

Answer 5

Solve all values of sin(x)=+-3. DO NOT FORGET NEGATIVE SOLUTIONS

Question 6

What is the general aim when proving trig identities?

Answer 6

Start with one side and make it look like the other

or

reduce the entire thing to an identity.

Start by replacing terms that appear on one side with identities involving terms appearing on the other

Always have a play around if in doubt

Question 7

How do you separate ae^(2x+3)

Answer 7

a*e^2x * e^3

Question 8

Which step is often missed in integration by substitution?

Answer 8

Change the limits when you integrate in terms of u