9. If f (x) = sin 3x so lim f(x+2h)+f(x-2h)-2f(x) ... -18h2 А. —3 sin 3x В. —2 sin 3x C. sin 3x D. 2 sin 3x E. 3 sin 3x ||

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A: To solve (y+8)-8=0 where y is a real number.

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Q: a+vb So the value of a + b + c is. 4. If cos 36° A. 8 В. 10 С. 12 D. 15 Е. 18

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A: topic - compound interest

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A: Topic = Algebra