1 Q BAS 6 2 [//dx Which of the following is the integrand in the definite integral above? Select the correct answer below: 0 - ²2/1 2 O x 03/20 O dx W * 3 80 E 54 $ 883 F4 R %. 5 F5 T MacBook Air ^ 6 F6 Y & 7 8 DII FB 9 F9

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A: As per the rules we are supposed to answer the first question and rest can be reposted.

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A: The solution is given below

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A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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A: the answer is give in step2

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A: Solution is given below:

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A: We can solve this as follows:

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Q: Find the four second partial derivatives. Observe that the second mixed partials are equal. z = x4 –…

A: Here is the solution: