A Level Maths Part 2

What is the common ratio of this geometric sequence?

3, -6, 12, -24, ...

• 2

• -2

• 3

• -3

Which identity is NOT correct

• sin²x + cos²x = 1

• sec²x + 1 = tan²x

• sin2x = 2 sinxcosx

• cos2x = cos²x- sin²x

Why did the cat slide off the roof?

• He fell asleep

• Because his 'mew' was too small

• A dog pushed him

• He was chasing a bird

(x + 1)³ =

• x³ + 1

• 3x + 3

• x³ - 3x² - 3x + 1

• x³ + 3x² + 3x + 1

d/dx (ln 3x)

• 3/x

• 1/3x

• 1/x

• 3 ln3x

 $\int_0^{2\pi}\sin x\ dx$  

• 0

• 2 $\pi$  

• 2

• -cosx + c

If 

 $\frac{d^2y}{dx^2}$  < 0

• The curve is convex

• the curve is concave

• The curve has a stationary value

• The gradient is negative