1/9 Determine the trapezoidal approximation of 7 sin 9x dx using 4 equal subdivisions of the interval of integration. Choose the correct answer below. OA (7-742) OB. (14+77) Oc. (7+7V2)

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A:

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Q: xp. This is a nine, last time i ask it was confused for a four so i thought id point it out.

A: The solution is :

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