document.write( "Question 63162: A RECTANGLE IS PLACED UNDER THE PARABOLIC ARCH GIVEN BY f(x)=27-3x2 BY USING A POINT (x,y) ON A PARABOLA. WRITE A FORMULA FOR THE FUNCTION A(x) THAT GIVES THE AREA OF THE RECTANGLE AS A FUNCTION OF THE x-COORDINATE OF THE POINT CHOSEN. \n" ); document.write( "
Algebra.Com's Answer #44094 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A RECTANGLE IS PLACED UNDER THE PARABOLIC ARCH GIVEN BY f(x)=27-3x2 BY USING A POINT (x,y) ON A PARABOLA. WRITE A FORMULA FOR THE FUNCTION A(x) THAT GIVES THE AREA OF THE RECTANGLE AS A FUNCTION OF THE x-COORDINATE OF THE POINT CHOSEN \n" ); document.write( ": \n" ); document.write( "The axis of symmetry will be at 0 \n" ); document.write( ": \n" ); document.write( "The height of the square will be y which is 27- 3x^2 \n" ); document.write( ": \n" ); document.write( "Length of the square will be 2x \n" ); document.write( ": \n" ); document.write( "A(x) = 2x(27-3x^2) \n" ); document.write( ": \n" ); document.write( "An example when x = 2, Length = 4, y = 15 (height), Area = 15*4 = 60 \n" ); document.write( ": \n" ); document.write( "A(2) = 2(2)(27 - 3(2^2) \n" ); document.write( "A(2) = 4(27 - 12) \n" ); document.write( "A(2) = 4(15) \n" ); document.write( "A(2) = 60\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Looks kind of like this: \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "A graph of the area of the rectangle equation: \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "As you can probably see I have not done this particular problem before but got \n" ); document.write( "to thinking about it and this is what I came up, hope it's helpful \n" ); document.write( " |