NSolve 指令

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此指令只能用在运算区

NSolve[ <Equation> ]
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NSolve[ <Equation> ]
Finds a numeric solution for a given equation for the variable x.
范例:
NSolve[cos(x) = x] yields {x = 0.7390851332151606}.
NSolve[ <Equation>, <Variable> ]
Finds a numeric solution to an equation for a given unknown variable.
范例:
NSolve[a^4 + 34a^3 - 34, a] yields {a = 0.9904738886662206}.
备注: It is optional to give the starting point like a=3.
NSolve[ <List of Equations>, <List of Variables> ]
Finds a numeric solution to a set of equations for a given set of unknown variables.
范例:
NSolve[{π / x = cos(x - 2y), 2 y - π = sin(x)}, {x=3, y=1.5}] yields {x = 3.141592651686591, y = 1.570796327746508}.
备注: It is optional to give the starting point like {x=3, y=1.5}.
备注:
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