MAST10005 Calculus 1
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MAST10005 Calculus 1
Assignment 1 Written Part
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1. Define sets P, C S R2 by:
C = {(x, y) e R2 I x2 + 4y6 = 4y4 }
P = {(2 cos(t) sin2 (t), sin(t)) I t e R}.
Note that P is expressed using “abbreviated” descriptive notation.
Prove that P S C . Reviewing Question 5 of Workshop 2 should get you started.
2. (a) Use a sign diagram to express
A = {x e R / {-1, 0, 1} │ > 0}
as a union of intervals.
g
(b) By solving the inequality sin(2x) > cos(x), express B =,x e ( , ) I sin(2x) > cos(x) 、
as an interval. Some hints:
● Review Question 5(c) of Practice Class 1.
● Add the values of cos() and sin() to the unit circle diagram at right.
1
θ =
− 1 1
− 1
北
2022-08-13