Number of results: 17
Math11U
no
Wednesday, July 21, 2010 at 11:13pm by Jen
Math11U
Just a question.. should I have 3 numbers and not only two?
Sunday, July 25, 2010 at 11:53am by Kitkat
Math11U
Determine the maximum or minimum value. Use at least two different methods. y=3x(x-2)+5
Sunday, July 18, 2010 at 5:56pm by Katya
Math11U
I don't know the answer, but I know that in this particular question the plane is flying at an altitude of 9750 metres.( The q. is in Nelson Functions 11 pg.319 #8)
Wednesday, July 21, 2010 at 11:24pm by Ethan
Math11U
It's Cos^2(theta) is that the same as csc^(theta)?
Wednesday, July 21, 2010 at 11:13pm by Kitkat
Math11U
You need to know the altitude at which the plane is flying. Two angles alone cannot produce a length, no matter what you do to them mathematically. That is a fundamental principle of dimensional analysis.
Wednesday, July 21, 2010 at 11:24pm by drwls
Math11U
Cos^2(theta)-3csc(theta)+2 divided by csc(theta)-1
Wednesday, July 21, 2010 at 11:13pm by Kitkat
Math11U
I hope you mean (csc^Ø - 3cscØ + 2)/(cscØ - 1) if so, then (cscØ - 1)(cscØ - 2)/(cscØ-1) = cscØ - 2
Wednesday, July 21, 2010 at 11:13pm by Reiny
Math11U
csc^(theta) is meaningless notation. Theta is never an exponent (although it could be). You would still need to specify an angle for which you are taking the cosecant. cos^2(theta) means the same thing as [cos(theta)]^2
Wednesday, July 21, 2010 at 11:13pm by drwls
Math11U
A surveyor in an airplane observes that the angle of depression to two points on the opposite shores of a lake are 32 and 45 degrees, respectively. What is the width of the lake to the nearest metre, at those two points?
Wednesday, July 21, 2010 at 11:24pm by Kitkat
Math11U
A Pythagorean Triple is a set of integers that satisfy the Pythagorean Theorem, c squared= a squared + b squared. 3,4,5 and 5,12,13 are just two of many examples. Find another, that is not a multiple of the one of the two given, using the following formula. n squared- m ...
Sunday, July 25, 2010 at 11:53am by Kitkat
Math11U
One method to use would be completng the square. 3x^2 -6x +5 = 3(x^2 -2x +1) +2 = 3(x-1)^2 +2 The lowest possible value is clearly 2. It happens when x = 1. There is no maximum value. Another method would be calculus. A relative maximum or minimum occurs where dy/dx = 0 6x -6...
Sunday, July 18, 2010 at 5:56pm by drwls
Math11U
Given:Y = 3X(X - 2) + 5 Remove parenthesis: Y = 3X^2 -6X + 5 Find derivitive (Y') and set to 0: Y' = 6X -6 = 0, X = 1 = h = X-coordinate of vertex. Y = 3(1)(1 - 2) + 5 = 2 = MIN. = K = Y coordinate of vertex. V(h,k) V(1,2). 2nd method X =-B/2A = 6/6 = 1 = h = X-...
Sunday, July 18, 2010 at 5:56pm by Henry
Math11U
Simplify each trigonometric expression a) Sin(theta)Cot(theta)-Sin(theta)Cos(theta) c)(sin x + cos x)(sin x - cos x)+ 2 cos(squared)x
Monday, July 19, 2010 at 6:28pm by Katya
Math11U
A company has been selling 1200 computer games per week at $18 each. Data indicates that for each $1 price increase, there will be a loss of 40 sales per week. It costs $10 to produce each game. a) State the revenue function b) State the cost function c) State the profit ...
Sunday, July 18, 2010 at 1:15pm by Katya
Math11U
n^2-m^2, 2mn , n^2 + m^2 , where n > m will always produce a Pythagorean triple. If n and m are also relatively prime, that is they have no common factor between them, then that triple will also be unique. e.g. n= 12, m=7 12^2-7^2 = 144 - 49 = 95 2(12)(7) = 168 12^2 + 7...
Sunday, July 25, 2010 at 11:53am by Reiny
Math11U
sinØcotØ - sinØcosØ = sinØcosØ/sinØ - sinØcosØ = cosØ - sinØcosØ = cosØ(1-sinØ) (sin x + cos x)(sin x - cos x)+ 2 cos(squared)x = sin^2 x - cos^2 x + 2cos^2 x = sin^2x + cos^2x = 1
Monday, July 19, 2010 at 6:28pm by Reiny
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