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Unformatted text preview: of equations.
Numerical methods can be used to solve one equation for a
single value or a set of linear or nonlinear equations for
multiple unknowns.
Numerical methods usually require an initial guess for the
unknown(s).
The value of the initial guess(es) can influence the solution.
Numerical methods are not always successful in finding a
solution.
An acceptable tolerance rather than an exact answer is the
expectation.
A variety of constraints such as minimums, maximum in
addition to target values may be applied to the solution. Numerical Methods
h T0
w wa
cosh
2T0 1 Given the equation for cable sag it
is easy to calculate h.
Use a Numerical Methods approach
to solve for T0 if h, w, and a are
known.
T function(h,w,a) = ??? Numerical Solution
Solve Block – Mathcad
Solver – Calculator
Goal Seek – Excel
T0 = midspan tension
Middle of curve
h = amount of sag TI83 Solver
1. Select 0:Solver from the MATH menu
2. Enter equation eqn:0=(T/W)*(cosh(W*A/(2*T))1)H 3. Press ENTER, you’ll see the interactive solver editor. Enter
(T/W)*(c...
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 Spring '08
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