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| 1. | a. | Q = S·(1
+ pt) Q = S + Spt Spt = Q - S p = (Q - S)/St |
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| b. | V = q
(2/a - 5pR/m) V = 2q/a - 5pqR/m 5pqR/m = 2q/a - V R = m/5pq • (2q/a - V) |
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| c. | 1/v
+ 1/b = 1/f
1/b = 1/f - 1/v = v/fv - f/fv = (v - f)/fv b = fv / (v - f) |
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| d. | z =
4/(2p - 3) (2p - 3)z = 4 2pz - 3z = 4 2pz = 4 + 3z p = (4 + 3z)/2z = 2/z + 1,5 |
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| e. | y = (2x
- 4)/(4x + 1) y(4x + 1) = 2x - 4 4xy + y = 2x - 4 4xy - 2x = -y - 4 x(4y - 2) = -y - 4 x = (-y - 2)/(4y - 2) = (y + 2)/(4 - 4y) |
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| 2. | a. | y = √(2/x) +
4. y - 4 = √(2/x) (y - 4)2 = 2/x x(y - 4)2 = 2 x = 2/(y - 4)² |
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| b. | (b
+ 1)/(√(1 - a))
= b. b + 1 = b • √(1 - a) √(1 - a) = (b + 1)/b = 1 + 1/b 1 - a = (1 + 1/b)2 1 - (1 + 1/b)2 = a toegift: a = 1 - 1 - 2/b - 1/b2 a = -2/b - 1/b2 |
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© h.hofstede (h.hofstede@hogeland.nl) |
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