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27 Jul 2018, 01:30
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
82% (01:15) correct
18%
(01:07)
wrong
based on 383
sessions
History
Date
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Not Attempted Yet
If \(\alpha(x)= 2x^2 + 2\), which of the following is equal to \(\alpha(4)\) ?
(A) \(\alpha(\alpha(-1))\)
(B) \(\alpha(-2)\)
(C) \(\alpha(\alpha(2))\)
(D) \(\alpha(17)\)
(E) \(\alpha(34)\)
(A) \(\alpha(\alpha(-1))\)
(B) \(\alpha(-2)\)
(C) \(\alpha(\alpha(2))\)
(D) \(\alpha(17)\)
(E) \(\alpha(34)\)
27 Jul 2018, 01:49
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a(x) = \(2x^2 + 2\)
a(x) = \(2(4)^2 + 2\) = 2(16) + 2 = 34
option A
a(a(-1))
a(-1) = \(2(-1)^2 + 2\) = 2 + 2 = 4
=> a(a(-1)) = a(4)
Hence option A
a(x) = \(2(4)^2 + 2\) = 2(16) + 2 = 34
option A
a(a(-1))
a(-1) = \(2(-1)^2 + 2\) = 2 + 2 = 4
=> a(a(-1)) = a(4)
Hence option A
27 Jul 2018, 02:21
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Starting off with Option A)
= α( α(-1) )
= α( 2*(-1)^2 + 2 )
= α( 2 + 2 )
= α(4)
Hence, A.
= α( α(-1) )
= α( 2*(-1)^2 + 2 )
= α( 2 + 2 )
= α(4)
Hence, A.
