Anonim A

29 November 2023 14:11

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Anonim A

29 November 2023 14:11

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Dina A

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29 November 2023 14:23

<p>f(x) = 2 - x ; g(x) = 2x + 3 ; h(x) = x<sup>2</sup> - 3x + 4 ; (h o f o g) (6)?</p><p>1) cari (f o g) (x) terlebih dahulu&nbsp;</p><p>f(g(x)) = 2 - (2x + 3) = 2 - 2x - 3 = -2x - 1</p><p>&nbsp;</p><p>2) substitusi (f o g)(x) ke (h o f o g)(x)</p><p>h(f(g(x))) = (-2x - 1)<sup>2</sup> - 3(-2x - 1) + 4</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4x<sup>2</sup> + 4x + 1 + 6x + 3 + 4</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4x<sup>2</sup> + 10x + 8</p><p>&nbsp;</p><p>substitusi x = 6 ke dalam (h o f o g)(x)</p><p>(h o f o g)(6) = 4(6)<sup>2</sup> + 10(6) + 8&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4(36) + 60 + 8</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 144 + 68 = 212</p><p>&nbsp;</p><p>semoga membantu 🙏🏻</p>

f(x) = 2 - x ; g(x) = 2x + 3 ; h(x) = x2 - 3x + 4 ; (h o f o g) (6)?

1) cari (f o g) (x) terlebih dahulu 

f(g(x)) = 2 - (2x + 3) = 2 - 2x - 3 = -2x - 1

 

2) substitusi (f o g)(x) ke (h o f o g)(x)

h(f(g(x))) = (-2x - 1)2 - 3(-2x - 1) + 4

                 = 4x2 + 4x + 1 + 6x + 3 + 4

                 = 4x2 + 10x + 8

 

substitusi x = 6 ke dalam (h o f o g)(x)

(h o f o g)(6) = 4(6)2 + 10(6) + 8 

                       = 4(36) + 60 + 8

                       = 144 + 68 = 212

 

semoga membantu 🙏🏻


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