We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
888
1
avatar

I'm confused about how to set this up and solve it

 Jan 23, 2018

Best Answer 

 #1
avatar+8077 
+1

temperature   =   f(x)   =   3.8 cos( πx / 20 ) + 2.2

 

The lowest temperature will occur when  cos( πx / 20 )  is at its lowest value, which is   -1  .

 

3.8(-1) + 2.2   =   -3.8 + 2.2   =   -1.6

 

The lowest temperature is  -1.6  degrees Celsius.

 

Here's a graph:  https://www.desmos.com/calculator/vipm1lflrn

 Jan 23, 2018
edited by hectictar  Jan 23, 2018
 #1
avatar+8077 
+1
Best Answer

temperature   =   f(x)   =   3.8 cos( πx / 20 ) + 2.2

 

The lowest temperature will occur when  cos( πx / 20 )  is at its lowest value, which is   -1  .

 

3.8(-1) + 2.2   =   -3.8 + 2.2   =   -1.6

 

The lowest temperature is  -1.6  degrees Celsius.

 

Here's a graph:  https://www.desmos.com/calculator/vipm1lflrn

hectictar Jan 23, 2018
edited by hectictar  Jan 23, 2018

14 Online Users

avatar
avatar