# Modulus Help quick question!

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#1
y = f(x) max point is (-4,-6)
Find Minimum of y = |f(x)|:

Would that just be (4,6)

And find the minimum of y = 1/f(x)

would that be (-1/4,-1/6)?
1
4 weeks ago
#2
(Original post by Hollymae764)
y = f(x) max point is (-4,-6)
Find Minimum of y = |f(x)|:

Would that just be (4,6)

And find the minimum of y = 1/f(x)

would that be (-1/4,-1/6)?
Partly right.

Do you think the x-coordinate is going to change for the new max/min?
0
#3
okay not for the modulus one that wouldn't make sense ... so is the answer for the first one (-4, 6)

but for the second yeah i think the x co ordinate would change since f(x)^-1 is the same as f(x) reflected in the line y = x
0
4 weeks ago
#4
(Original post by Hollymae764)
okay not for the modulus one that wouldn't make sense ... so is the answer for the first one (-4, 6)
Yep

but for the second yeah i think the x co ordinate would change since f(x)^-1 is the same as f(x) reflected in the line y = x
Careful. You're not dealing with the "inverse function". It's simply 1 over the function.

E.g. if f(x) = x^2 then 1/f(x) is 1/x^2 = x^-2.
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