This is differentiation, you have dy/dx =2x+1.then substitute the x=2 in the dy/dx,then you will find that dy/dx =5(that is the gradient of the tangent)
y-(-3) =3(x-2)
y+3 = 3x-6
y= 3x-9 (equation of the tangent)
The othe equation you...
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(Distance of speaker A from O is 3.0m and the distance of speaker B from O is 2.0m.Point C is horizontally at a distance of 4.0m from O)
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Question regarding on sound waves.
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Hello,I just join in as member yesterday.Sorry to interrupt that I have question to ask.Here's the question.
1.Two small speakers emit sound waves of different...