Pure 2

Question 1

How to sketch|ax+b|

Answer 1

• sketch ax+b
• reflect any section below x-axis

Question 2

how to sketch a|x|+b

Answer 2

• draw the graph to the right of y axis
• reflect it to the left

Question 3

how to integrate k/x

Answer 3

k ln|x|

Question 4

concave is when:

Answer 4

f’‘(x) >0

Question 5

convex is when:

Answer 5

f’‘(x) < 0

Question 6

point of inflection is when:

Answer 6

f’‘(x) = 0