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Answer to Question #139636 in Calculus for Timmy
Question #139636
If y = ln7x, then y’ is
Select one:
A. -7/x
B. 1/7x
C. 7/x
D. 1/x
Select one:
A. -7/x
B. 1/7x
C. 7/x
D. 1/x
Expert's answer
"y' = (ln 7x)' = 1\/7x *(7x)' = 1\/7x * 7 ="
"= 7\/7x = 1\/x"
Answer : D "1\/x"
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