Jarrod Asuncion Period 1 Brose
Equation f(b) – f(a) = f’(c) b – a Slope = f’(c)
Sample Problem Find the number c satisfying the Mean Value Theorem for f(x)=sinx on the interval [1,1.5], correct to three decimal places.
Step 1: Use formula [1,1.5] is the same as [a,b]. The function is f(x) = sinx. f(1.5) – f(1) = – = = f’(c) 1.5 – 1 0.5
Step 2: Take derivative of function and set it equal to f’(c) and substitute ‘x’ for ‘c’. And solve for ‘c’. f(x)=sinx =› f’(x)=cosx f’(x)=f’(c) & substitute ‘x’ for c. trying to find ‘c’ cosc=0.312 c=1.253
IMPORTANT The value for ‘c’ must be between the interval given. c=1.253 Interval [1,1.5] C satisfies the Mean Value Theorem (MVT)