absolute values, derviatives, and trig

[dreamy comet]

so is there a faster way to approch this questions rather than finding derviative and then plugging in 3pi/4?

[sinful hearth]

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[split mesa]

no?

i mean you could use the fact that for pi/2<x<pi that sin is negative and cosine is positive

so you would have f(x)=sin(x) and g(x)=-cos(x)

use chain rule to get h(x)=cos(cos(x))*sin(x)

and solve from there

[dreamy comet]

oh wait that makes is so much more simple

thank you!!!

[split mesa]

yw

[pine crypt]

@dreamy comet

<:HelpIcon:1304095958283321385>| Help Reminder

Hello xingkongxue, this is a friendly reminder that your thread has been inactive for more than 24 hours. If you no longer need assistance, please consider closing the thread using the +close command.

[languid loom]

+close