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Author Question: The function f(x) = 4 + kx2 - x4 has a maximum value at x = 2. Find k. (Read 55 times)

123654777

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on: May 26, 2021

Question 1

Find the extreme values of  f(x) = x +  cos x  on [0, π].
◦ maximum + 1,  minimum   - 1
◦ maximum π - ,  minimum
◦ maximum + ,  minimum -
◦ maximum ,  minimum π -
◦ no extreme values

Question 2

The function  f(x) = 4 + kx2 - x4  has a maximum value at  x = 2. Find  k.
◦ k = -4
◦ k = -8
◦ k = 0
◦ k = 4
◦ k = 8
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Marked as best answer by 123654777 on May 26, 2021

Bigfoot1984

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Reply #1 on: May 26, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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123654777

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Reply 2 on: May 26, 2021
Thanks for the timely response, appreciate it

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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