Agood technique to prevent children from talking to you while you're observing is to a. sit far away. b. avoid eye contact. c. tell them to go away. d. stand to one side.

B. Avoid eye contact. I think...I'm not a parent, and I'm not taking any kind of class that would educate one on the subject. I would guess avoiding eye contact is the answer because moving yourself would only prompt the child to move with you, and telling them to away seems pretty harsh and more like there are better alternatives, and I'm not sure standing to one side would make any kind of difference at all. Hope I helped! :-)

To solve this integral, what you can do is split it up as follows: (1) ∫40(x2−4)dx=∫40(x2)dx−∫40(4)dx. to integrate  4  as an  indefinite integral, a good rule of thumb is  by  an equation below  for  polynomials; . (2) ∫xa=xa+1a+1+c , where a is any number. c denotes some constant that is crucial when doing 

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