Asked by Anonymous
If f(x)=1/x, then f(x) is always concave up for xer?
True or False? explain
True or False? explain
Answers
Answered by
Anonymous
f(x) = x^-1
f'(x) = -x^-2
f"(x) = 2 x^-3 = 2/x^3
This is + for +x and - for -x so sometimes concave up and sometimes concave down
f'(x) = -x^-2
f"(x) = 2 x^-3 = 2/x^3
This is + for +x and - for -x so sometimes concave up and sometimes concave down
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