Question and Answers Forum

All Questions      Topic List

None Questions

Previous in All Question      Next in All Question      

Previous in None      Next in None      

Question Number 122843 by ZiYangLee last updated on 20/Nov/20

$$\mathrm{Find}\mathrm{the}\mathrm{range}\mathrm{of}y={\cos }^{2}x-3\cos x+5$$

Commented by Dwaipayan Shikari last updated on 20/Nov/20

$$-1⩽cosx⩽1$$$$-3⩽-3cosx⩽3$$$$Range{y}_{min}=-3+5+1=3$$$$y_{max}=3+5+1=9$$$$3⩽y⩽9$$

Commented by ZiYangLee last updated on 21/Nov/20

$$\mathrm{thanks}$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com