Foundation Program Mathematics C SAMPLE C
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Foundation Program
SAMPLE C
Mathematics C
Final Term 1 Examination
Question 1 (12 marks) Use a SEPARATE book clearly marked Question 1
(i) Calculate correct to 2 significant figures.
(ii) Simplify − .
(iii) Simplify .
(iv) Factorise x3 − 8 .
(v) Solve the inequality 2 − 3x ≤ −2 .
(vi) Evaluate x3 .
(vii) A = {x :x < −3 ∪ x ≥ 1} .
(a) Graph the set A on the real number line.
(b) Write A′ in set notation.
(viii) On separate number planes sketch the graphs of each of the following showing their
essential features.
(a)
(b)
(c)
2
y = − x + 1 .
y = e − x − 1 .
y = .
Question 2 (12 marks) Use a SEPARATE book clearly marked Question 2
(i) Evaluate 3(k − 10) . k = 1
3x + 1
(iii) Solve the inequality 2x − 3 > 5 .
(iv) Find the gradient ofthe tangent to the curve y = 5(x − 9)3 at the point where x = 2 .
(v) Find the domain ofthe function y = .
(vi) (a) Find the common ratio of the infinite geometric series
ln256 + ln 16 + ln 4 + …
(b) Find the value of k if ln 256 + ln 16 + ln 4 + … = ln k .
Question 3 (12 marks) Use a SEPARATE book clearly marked Question 3
(i) Write down the values of x for which the curve y = 2x3 − 6x2 + 4 is concave up.
(ii) For a certain series the sum of the first n terms is given by Sn = 2n + n .
(a) Find T1
(b) Find an expression for Tn , for n ≥ 2
(c) Hence or otherwise find the value of T10 .
(iii) The points P(−2, − 3) , Q 2(, − 1) and R 4(, 3) are three vertices ofthe rhombus
PQRS.
(a) Show this information on a diagram.
(b) Find the coordinates ofthe midpoint M of the diagonal PR.
(c) Hence or otherwise find the coordinates of point S, the fourth vertex of the rhombus.
(d) Find the equation ofthe diagonal PR. (e) Find the length ofthe side PQ ofthe rhombus. (f) Show that MQ is perpendicular to PR.
Question 4 (12 marks) Use a SEPARATE book clearly marked Question 4
(i) Consider the function y = 2x3 − 3x2 + 5 .
(a) Find the stationary points ofthe function and determine their nature.
(b) Find the point of inflection.
(c) Draw a neat sketch of the function showing the above features.
(ii) A bin is being loaded with sand and after one hour is filled to capacity.
The volume Vcubic metres of sand in the bin at time t minutes is given by the
equation V = − for 0 ≤ t ≤ 60 .
(a) Find the capacity ofthe bin.
(b) Find the time taken to load 3 ⋅ 5 m3 of sand into the bin.
(c) Sketch the graph ofthe function V = t − t2 for 0 ≤ t ≤ 60 .
(d) Find the rate at which sand is being loaded into the bin when t = 10 .
(e) Find the average rate at which sand is loaded into the bin during the one
hour loading period.
Question 5 (12 marks) Use a SEPARATE book clearly marked Question 5
(i) Solve the inequality 3x2 − 5x − 2 ≥ 0 .
(ii) If log10 x = m and log10y = n , express the following in terms of m and n:
(a)
(b)
(c)
log10 x .
y
logxy 10 .
log10 xy .
(iii) A manufacturer of digital cameras sells x million cameras per year where 1 ≤ x ≤ 10 .
The total cost C(x) million dollars and the revenue from sales R(x) million dollars are given by:
C(x) = 156 + 19 ⋅ 7x and R(x) = x(94 ⋅ 8 − 5x) .
(a) Write an expression for the profit P(x) million dollars from the sale of x
million cameras.
(b) Show that the break even point, to the nearest ten thousand, is 2 490 000
cameras.
Question 6 (12 marks) Use a SEPARATE book clearly marked Question 6
(i) The area of a rectangle is 100 cm2 and the length of one of its sides is x cm.
(a) If the perimeter ofthe rectangle is P cm show that P = 2x + 200 .
x
(b) Find the value of x which gives a minimum value for the perimeter ofthe
rectangle.
(ii) (a) Find the value of the infinite series 1 + 1 + 1 + ..... .
1 1 1
(b) Hence find an integer value for the infinite product 16 2 × 16 6 × 16 18 × .....
(iii) In this question the following formulae may be used:
FV = PMT (1+ i)n − 1 PV = PMT 1 − (1+ i)−n
A woman bought a house 12 years ago for $600 000. At the time she paid a deposit of 20% and signed a 30 year mortgage agreement to repay the balance plus interest by making equal monthly payments. The interest rate on the loan was 0 ⋅ 7% per month calculated on the unpaid balance.
(a) Find the monthly payment on this loan. Give your answer correct to
the nearest cent.
(b) Show that the amount owing on this loan 12 years after the mortgage was taken
out is $406 621 (correct to the nearest dollar).
(c) Find the total amount of interest paid on the loan in the first 12 years ofthe mortgage agreement.
(d) Find the equity that the woman has in her house now given a market value assessed as $1 000 000.
2022-03-07