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Question Number 147635 by tabata last updated on 22/Jul/21

$$findthetaylorseriesf\left(z\right)=cosz,z=\frac{\pi }{4}$$$$$$$$$$

Commented by mathmax by abdo last updated on 22/Jul/21

$$\mathrm{f}\left(\mathrm{z}\right)=\sum _{\mathrm{n}=0}^{\mathrm{\infty }}\frac{{(-1)}^{\mathrm{n}}}{2\mathrm{n}!}{(\mathrm{z}-\frac{\pi }{4})}^{2\mathrm{n}}$$

Commented by tabata last updated on 22/Jul/21

$$???????$$

Commented by Sozan last updated on 22/Jul/21

$$thankyoumsrabdo$$

Commented by Sozan last updated on 22/Jul/21

$$msriftheseriesismaclurienthen$$$$$$$$\underset{n=0}{\sum ^{\mathrm{\infty }}}\frac{{(-1)}^n}{2n!}{\left(z\right)}^{2n}itsrightorfalse?$$

Commented by mathmax by abdo last updated on 23/Jul/21

$$\mathrm{this}\mathrm{is}\mathrm{maclaurin}\mathrm{serie}\mathrm{at}\mathrm{z}=0...$$

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