1 tan x is increased from minus infinity to -1 cos x is decreased from 0 to √ 2/2 So, (1) should be true 2 sin x is positive and cos x is negative (2) should be false 3 tan x is increased from minus infinity to -1 sin x is...
Let $W be the rateable value W(5%/4) = 312.5 W = 312.5/(0.0125) = 25000
1(a) Tony is 4n years old and Phoebe is n - 6 years old After 2 years, the sum of the ages of the three of them = n + 2 + 4n + 2 + n - 6 + 2 = 6n (b) The present age of Uncle Yeung = 6n * 2 - 2 = 12n - 2
(a) 10000 (1-5%)(1+10%)(1+10%) = 11495 (b) 1495/10000 x100% = 14.95%
23. a3 = a1-a2 = 1-2 = -1 a4 = a2-a3 = 2-(-1) = 3 a5 = a3-a4 = -1-3 = -4 a6 = a4-a5 = 3-(-4) = 7 a7 = a5-a6 = -4-7 = -11 a8 = a6-a7 = 7-(-11) = 18 24. T(n) = 5n-4 Sum of the first 10 terms = ∑_(k=1 to 10) (5k-4) = 5∑_(k=1 to 10) k - ∑_(k=1 to 10) 4 = 5*10*11/2 - 4*10 = 275-40 = 235 25. For the 1st pattern...
Hope I can help you. 圖片參考：http://imgcld.yimg.com/8/n/HA07015859/o/701101160050713873370190.jpg
圖片參考：http://i1096.photobucket.com/albums/g340/pingshek/2012-9-19_zps214736f3.png?t=1348049050 http://i1096.photobucket.com/albums/g340/pingshek/2012-9-19_zps214736f3.png?t=1348049050
If the sum of money is P P(5x3.5%) = 2P[(1+r%)(1+r%)-1] 17.5% = 2[2r%+r%xr%] As r%xr% is negligible, r% = 17.5%/4 r = 4.37
(a) Draw a perpendicular line from the vertex with angle γ to the base c.Then c will be devided in two parts. Let the left part is x and the right part is y cosβ = x/a => x = acosβcosα = y/b => y = bcosαc = x + y = acosβ + bcosα(b) c...
