The curve y = 2x^3 + ax^2 + bx + 7 has a stationary point at the point (2,-13). a Find the value of a and the value of b.
b Find the coordinates of the second stationary point on the curve.
c Determine the nature of the two stationary points.
d Find the coordinates of the point on the curve where the gradient is minimum
and state the value of the minimum gradient.​

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

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part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

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answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

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