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Write a tangent function h(x), such that the halfway points on one period are (-pi/2 , 2) and (pi/2 , 4)

 Nov 23, 2016

Best Answer 

 #5
avatar+118654 
+5

question:  I still don't get it.

 

3+1=4

and

3-1=2

 

y=2 and y=4 are on either side of the centre - the middle is y=3   

so (0,3) must be the 'centre' of your graph,

 

if the graph was   y = tanx then one centre  is (0,0)  

If you want the centre to be (0,3) it will have to be  y= (tanx) +3

 

does that help?

 Nov 24, 2016
 #1
avatar+118654 
+5

Write a tangent function h(x), such that the halfway points on one period are (-pi/2 , 2) and (pi/2 , 4)

 

Mmm not even sure what this means Ninja....  what is a halfway point and how can you have 2 of them?

 

Maybe

 

\(y=3+sinx\)

 

full graph

https://www.desmos.com/calculator/xn30b7wnd2

 

image only

 Nov 23, 2016
 #2
avatar+118654 
+5

Oh dear, I did not see the tangent function part.     angry

Melody  Nov 23, 2016
 #3
avatar+118654 
+5

Since it is tan maybe this is what is wanted.  It still doesn't make much sense though.

 

y=3+tan(x/2)

 

https://www.desmos.com/calculator/0fh3otmzqj

 

 Nov 23, 2016
 #4
avatar+118654 
+5

Ninja's question is

"Where the heck did you get the 3 from"    :D

 

y=tanx   is centred on (0,0)     (at least on of the periods is)

 

so if you wanted points rotationally symmetrical on either side  they would be    

(0-x,0-y) and (0+x,0+y)

so they could be

 

your points are   (-pi/2 , 2) and (pi/2 , 4)

 

The y values are 2 and 4 so the centre of them is 3  Hence the graph has be lifted up 3 .

 

That is where the 3 came from :/

Melody  Nov 24, 2016
 #5
avatar+118654 
+5
Best Answer

question:  I still don't get it.

 

3+1=4

and

3-1=2

 

y=2 and y=4 are on either side of the centre - the middle is y=3   

so (0,3) must be the 'centre' of your graph,

 

if the graph was   y = tanx then one centre  is (0,0)  

If you want the centre to be (0,3) it will have to be  y= (tanx) +3

 

does that help?

Melody  Nov 24, 2016
 #6
avatar+50 
+5

Yes, thank you very much!!

 Nov 24, 2016

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