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OPGAVEN |
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1. |
Los op: 4 + 2 •
³√(x2)
= 18. Schrijf je antwoord als wortel. |
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2. |
Gegeven is de functie:
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a. |
Bereken in twee decimalen nauwkeurig f(-3) |
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b. |
Los op f(x) = -3 |
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OPLOSSING |
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1. |
2 •
3√(x2) = 14
Þ 3√(x2)
= 7 Þ
x2/3 = 7
Þ x
= 73/2 =
√343 |
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2. |
a. |
f(-3) = 3 -
(-3)^(3/5) = 4,93 |
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b. |
3 - x3/5
= -3 Þ x3/5 = 6
Þ x = 65/3 =
19,81 |
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