11 The tangent to the curve y=8x−x2 at the point (2,12) cuts the x-axis at the point P.a Find the coordinates of P.b Find the area of the shaded region.
Q. 11 The tangent to the curve y=8x−x2 at the point (2,12) cuts the x-axis at the point P.a Find the coordinates of P.b Find the area of the shaded region.
Calculate Derivative and Slope: Calculate the derivative of y=8x−x2 to find the slope of the tangent at the point (2,12).dxdy=8−2xAt x=2, dxdy=8−2(2)=4.The slope of the tangent line at (2,12) is 4.
Write Tangent Line Equation: Write the equation of the tangent line using point-slope form.y−y1=m(x−x1)y−12=4(x−2)
Find X-Intercept: Find where this tangent line intersects the x-axis by setting y=0.0−12=4(x−2)−12=4x−84x=4x=1
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