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Bayangan kurva y = 2x 2 – 3x − 1 jika di dilatasi dengan faktor skala 2 dan pusat di titik (0, 0) adalah …

Bayangan kurva y = 2x2 – 3x − 1 jika di dilatasi dengan faktor skala 2 dan pusat di titik (0, 0) adalah …

  1. begin mathsize 14px style straight y equals straight x squared minus 3 straight x minus 2 end style

  2. begin mathsize 14px style y equals x squared minus 3 x plus 2 end style

  3. begin mathsize 14px style straight y equals 1 half straight x squared minus 3 straight x minus 1 end style

  4. begin mathsize 14px style straight y equals 1 half straight x squared minus 3 straight x minus 2 end style

  5. begin mathsize 14px style straight y equals 1 half straight x squared minus 3 straight x plus 2 end style

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Substitusikan ke persamaan kurva y = 2x 2 – 3x − 1, maka :

begin mathsize 14px style straight x to the power of straight apostrophe equals kx straight x to the power of straight apostrophe equals 2 straight x straight x equals 1 half straight x to the power of straight apostrophe  straight y to the power of straight apostrophe equals ky straight y to the power of straight apostrophe equals 2 straight y straight y equals 1 half straight y to the power of straight apostrophe end style


Substitusikan ke persamaan kurva y = 2x2 – 3x − 1, maka :

begin mathsize 14px style 1 half straight y to the power of straight apostrophe equals 2 open parentheses 1 half straight x straight apostrophe close parentheses squared minus 3 open parentheses 1 half straight x to the power of straight apostrophe close parentheses minus 1 1 half straight y to the power of straight apostrophe equals 1 half open parentheses straight x straight apostrophe close parentheses squared minus 3 over 2 straight x to the power of straight apostrophe minus 1    straight space left parenthesis dikali straight space 2 right parenthesis straight y to the power of straight apostrophe equals open parentheses straight x straight apostrophe close parentheses squared minus 3 straight x to the power of straight apostrophe minus 2 straight y equals straight x squared minus 3 straight x minus 2 end style

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Kurva f ( x ) = a x 2 + b x + 5 di cerminkan terhadap garis y = 3 menghasilkan bayangan kurva dengan puncak (1,5). Nilai dari f ( − 2 ) adalah…

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