Set and Evaluate Condition

Combine two symbolic inequalities into a logical expression usingxor.

信谊x范围= xor (x > -10 x< 10);

Replace variablexwith 11 and 0. If you replacexwith 11, then inequalityx > -10is valid andx < 10is invalid. If you replacexwith 0, both inequalities are valid. Note thatsubsonly substitutes the numeric values into the inequalities. It does not evaluate the inequalities to logical1or0.

x1 = subs(range,x,11) x2 = subs(range,x,0)

x1 = -10 < 11 xor 11 < 10 x2 = -10 < 0 xor 0 < 10

To evaluate these inequalities to logical1or0, useisAlways. If only one inequality is valid, the expression withxorevaluates to logical1. If both inequalities are valid, the expression withxorevaluates to logical0.

isAlways(x1) isAlways(x2)

ans = logical 1 ans = logical 0

Note thatsimplifydoes not simplify these logical expressions to logical1or0. Instead, simplify returnssymbolicconstantssymtrueorsymfalse.

s1 = simplify(x1) s2 = simplify(x2)

s1 = symtrue s2 = symfalse

Convert symbolicsymtrueorsymfalseto logical values usinglogical.

logical(s1) logical(s2)

ans = logical 1 ans = logical 0