L P A y=x Q >x Consider the function ƒ defined by f(x) = 90e−0.5x for x Є R+. The graph of ƒ and the line y = x intersect at point P. (a) Find the x-coordinate of P. The line I has a gradient of -1 and is a tangent to the graph of ƒ at the point Q. (b) Find the exact coordinates of Q. (c) Show that the equation of L is y = −x + 2ln 45 +2. The shaded region A is enclosed by the graph of ƒ and the lines y = x and L.

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A: We need to find  the functional value of at u and v

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