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spayn [35]
2 years ago
12

Solve (x + 1)2 – 4(x + 1) + 2 = 0 using substitution. u = x 4(x +1) x +1 (x + 1)2

Mathematics
1 answer:
marta [7]2 years ago
4 0

no substituion only rea numbersStep-by-stion:

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What are the first 5 terms of the sequence where a=1 a, a2=2 and an=1/2(a n-1•a n-2)
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Answer:

\large\boxed{a.\ 1,\ 2,\ 1,\ 1,\ \dfrac{1}{2}}

Step-by-step explanation:

We have the recursive formula of a sequence:

\left\{\begin{array}{ccc}a_1=1\\a_2=2\\a_n=\dfrac{1}{2}(a_{n-1}\cdot a_{n-2})\end{array}\right\\\\\text{thereofre}\\\\a_3=\dfrac{1}{2}(a_2\cdot a_1)=\dfrac{1}{2}(2\cdot1)=\dfrac{1}{2}(2)=1\\\\a_4=\dfrac{1}{2}(a_3\cdot a_2)=\dfrac{1}{2}(1\cdot2)=\dfrac{1}{2}(2)=1\\\\a_5=\dfrac{1}{2}(a_4\cdot a_3)=\dfrac{1}{2}(1\cdot1)=\dfrac{1}{2}(1)=\dfrac{1}{2}

7 0
3 years ago
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xxTIMURxx [149]

Answer:

The answer is 90 degrees.

Step-by-step explanation:

If you want an explination, I'm more than happy to explain.

4 0
2 years ago
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