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Express cos^2 x in terms of cos2x. Hence, express f(x) = 6cos^2 x - 4sin 2x in the form R cos (2x + Y degrees) + p where R, y and p are constants. Find the maxium and minimum values of f(x) and sketch
answered
Dec 12, 2018
Mathematics
high-school
6
votes
14.0k
views
Solve using the system using elimination for x - y= -5 and 3x + y= 1
answered
Oct 11, 2018
Mathematics
high-school
6
votes
137k
views
In what three ways did the invention of the Gutenberg press affect Europe?
answered
Aug 6, 2018
History
high-school
5
votes
43.6k
views
Escoge el verbo en el tiempo correcto. el lunes que viene, charlie y sophie _____ un programa de televisión muy interesante.
answered
Jul 16, 2018
Spanish
high-school
4
votes
27.7k
views
Allison has a ruler that is marked in fourths of an inch and a tape measure that is marked in halves of an inch. Which measuring tool will give Allison a more precise measure?
answered
Apr 6, 2018
Mathematics
middle-school
4
votes
78.4k
views
Where has Adrian just returned from? his favorite place in the world his favorite place in his hometown his least favorite place int he world the place he dislikes the most
answered
Mar 2, 2018
Spanish
high-school
2
votes
201k
views
Jane took out $135 from her checking account if jane now has a balance of $650 in her account how much did jane have in the account before she took out any money
answered
Feb 23, 2018
Mathematics
high-school
4
votes
193k
views
Skype Windows for Desktop Every time I open Skype, it opens 2 windows. 1 window is Skype, and 1 window is the Skype setup page that you get when you open Skype for the first time. I click 'Do not show
answered
Sep 17, 2017
Computers and Technology
middle-school
4
votes
62.5k
views
You are looking at joining Jim's Gym. Read the extract of their information leaflet below, and correct the error in tense. We have a range of state-of-the-art equipment for cardio-vascular workout and
answered
Jan 9, 2017
English
high-school
2
votes
22.6k
views
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