- #1

- 3

- 0

Where f(x) = xCos(x)

Show the bound f '(x)<=6 is valid for 0<= x<=5

I suspect this is an easy solution using the intermediate value theorem!

Thanks in advance,

slippers

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- Thread starter slippers
- Start date

- #1

- 3

- 0

Where f(x) = xCos(x)

Show the bound f '(x)<=6 is valid for 0<= x<=5

I suspect this is an easy solution using the intermediate value theorem!

Thanks in advance,

slippers

- #2

- 147

- 0

f'(x) = cos(x) + x*sin(x) <= 1 + 5*1 = 6

- #3

- 3

- 0

Ahhh, something just moved in my brain...

Thanks very much! :D

Thanks very much! :D

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