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How do I express y=acosx+bsinx in the form y=Rcos(x-c)?

From the addition formula, we know that:

Rcos(x-c) = Rcos(x)sin(c)+Rsin(x)cos(c)

Therefore:

acos(x)+bsin(x) = Rcos(x)cos(c)+Rsin(x)sin(c)

If we e...

DR
Answered by Daniel R. Maths tutor
26719 Views

What are the 'rules' of oscillation?

-Velocity is largest at the centre

-Acceleration is greatest at the Amplitude 

-Restoring Force is greatest at the amplitude 

-Elatsic Potential Energy is grea...

KD
Answered by Katie D. Physics tutor
8748 Views

How do I test for the presence of a carboxylic acid?

 

Add NaHCO3 or K2COthe reaction will produce COi.e Bubbles!

KD
Answered by Katie D. Chemistry tutor
6893 Views

What is a chiral carbon?

A carbon atom bonded to 4 different groups.

KD
Answered by Katie D. Chemistry tutor
6774 Views

What is the all or nothing principle?

Basically this means that if the threshold voltage of a neurone is reached -40mV, then a stimulus will be generated of always +40mV. If the threshold is not reached then there will be no signal. 

KD
Answered by Katie D. Biology tutor
9859 Views

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