Manament
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Pre‐calculus 12 Midterm Assignment (24 marks)
Each question is worth 1 mark. You must show all your work to obtain full marks. Marks will be deducted for no work shown.
1. If points (a, b) are on the graph of y= f(x), what points must be on the graph of
3 3 6 2?
2. The graph, y = f(x), is shown on the left. Determine the equation of the new graph on the right.
Ans: Equation of the graph on the right =
3. A function is transformed into a new function . To form the new function , is stretched vertically about the x‐axis by a factor of 0.25, reflected in the y‐axis, and
translated 7 units to the left. Write the equation of the new function .
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4. Given the sketch of drawn below, show the transformation of 4
graphically.
5. For the following radical function:
Determine the equation of the function in the form of ( )y b x p q
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6. Solve the radical equation algebraically and graphically.
1 1 0x x
Algebraically
7. Graph 2√ 3 2. State the domain and range.
8. Solve 2 1 0,0 2 for . Give solutions as exact values where possible.
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9. Solve 9 23 15 0 by factoring.
10. For the function 10 21 6, find the zeros of the function and sketch the graph of the function. Clearly label your points.
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11. Sales of snowmobiles are seasonal. Suppose sales in Camrose, Alberta are approximated by
200 200cos 2 6
S t
, where t is time in months with t=0 corresponding to January.
For what month are sales equal to 0?
12. If the following graph is in the form y = a sin [b(x‐c)]+d, then determine the equation of the
graphs.
13. A spring modeling in a sinusoidal function rests 1.6 metres above the ground. If the mass on the
spring is pulled 1.1 metres below its resting position and then released, it requires 0.5 seconds
to move from the maximum position to its minimum position. Assuming friction and air
resistance are neglected, write an equation in terms of cosine that describes this periodic
function.
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14. Verify that the equation csc
cos tan cot
x x
x x
is true for x= 60o for
6 x
. State all the non‐
permissible values of the equation in the domain 0° x 360°.
15. Determine all solutions, in radian measure, for the equation: sin √
16. Express 2sin cos 4 4
as a single trigonometric function. Then, give an exact value for the
expression.
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17. ∠ ∠ are both in Quadrant II where cos and sin . Determine the exact
value of cos .
18. Solve the following trigonometric equation for 7 9 : 4cos 3 20 1.
19. Algebraically determine the exact value of °
. Simplify completely.
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20. The polynomial function 4 7 6 has 1 as one of its factors. When it is divided by 1 , the remainder is 30. Algebraically determine the values of m and n.
21. Prove the identity: cos2
22. Write the equation for the graph shown in the form asin and in the form acos .
Sine graph: ______________________________
Cosine graph: _____________________________
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23. The minute hand of a clock is 4.5 inches long. What distance does the tip move in 25 minutes?
24. A box is 1m by 2m by 3m. If each side is increased by the same amount, how much must you
increase these sides to make the volume 10 times large?