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Find the domain the square root of [(9x-4)/x^2 -64]
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the speed of a stream is 6 mph. if a boat travels 54 miles downstream in the same time that it takes to travel 27 miles upstream, what is the speed of the boat in still water?
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find the limit as x approaches infinite x+(square root(xsquared+2x))
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Suppose a second-order difference equation is of the form yn + 2 - byn = dn2 where b = 14 and d = 16. To two decimal places, what is the value of the positive root in the auxiliary equation?
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(a+b)2=?
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If the rainfall was recorded on 20 (instead of 10) randomly selected days throughout the year, the standard error of the mean would be equal to:
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Show that for an arbitrary function g : R R, it is always true that g(A B) g(A) g(B) for all sets A,B R.
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A particle moves in a vertical plane under gravity and an air resistance whose magnitude per unit mass is K times the speed of the particle, where k is a positive constant. The coordinator of the particle at time t, with respect to horizontal axis ox and a vertical axis oy, are (x,y), Show that:...
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abstract math
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if x is a bounded sequence with lim inf x= lim sup x, show that x converges.
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Sample Questions
- 1. I’m having problems with my math. Can you help me? All I need is an example just to make sure I'm on track.
- Solve the following
- a) 3/(n+1)-1/(n+1)=14/(n^2-1)
- b) 1/(y-1 )+y/(1-y)
- c)4/(x-5)-3/(x+2)=28/(x^2-3x-10)
- d) (x-2)/(8x-24)*(5x-15)/(x^2 -4)
- e) z/(z-1)+1/2=3/z
- f) (x-3)/(x^2+2x-15)-(4-x)/(x^2-9x+20)
- 2. How do I set up this problem? An exam contains five "true or false" questions. How many of the 32 different ways of answering these questions contain 3 or more incorrect answers?
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