Thank you! But I guess you forgot 4, is not it? So, the answer going to be 2 / (sqrt(x1))
I'm really interested in x2 here. So, it is going to be 0 in differentiation, right?
1) My wife and I are very athletic. Between us, we jog an average of 5 miles a day. My wife jogs 10.
2) In freeway driving, my car averages 32 miles per gallon.
3) Last year my car repairs averages $48 per month.
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5) The average fuse time...