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Fnint Ti 83. Texas Instruments TI 83 Plus Graphics Calculator, Everything Else To access the function, press the [MATH] button and then scroll up or down to find 9:fnint( By symmetry, that's , which evaluates to −2(cos π/4 − cos 0) = −2(√ 2 /2 − 1) = 2−√ 2, approximately 0.5858.

Using the fnInt Command The area under the curve f(x) = x 2 above the x-axis between x = 0 and x = 1 is given by fnInt(f(var),var,a,b[,tol]) computes an approximation to the definite integral of f with respect to var from a to b

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Directions for each procedure are below for the TI-83/84 and on the next page for the TI-85/86 fnInt( returns exact results for functions that are polynomials of small degree. To access the function, press the [MATH] button and then scroll up or down to find 9:fnint(

TEXAS INSTRUMENTS TI83 Plus.FR Amazon.fr Hightech. tol controls the accuracy of the integral computed Example: Find the function integral of A 2, for the variable A, with 0 as the lower bound and 1 as the upper bound: 1) Press [MATH] then [9] to select 9:fnInt(.

Solving Systems of Linear Inequalities using a TI83 Plus Graphing. Using the fnInt Command The area under the curve f(x) = x 2 above the x-axis between x = 0 and x = 1 is given by fnInt(f(var),var,a,b[,tol]) computes an approximation to the definite integral of f with respect to var from a to b