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solvefor

solve for one or more of the variables found in a set of equations

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

solvefor(eqn_1, eqn_2, ... )

solvefor[varseq](eqnset)

Parameters

eqn_1, eqn_2, ...

-

equation or a set of equations to be solved collectively

varseq

-

expression sequence of variables to be placed on the left-side of the equations forming a solution

eqnset

-

expression sequence; one or more equations to be solved collectively

Description

• 

Important: The solvefor command has been deprecated.  Use the superseding command solve instead.

• 

The solvefor command isolates specified variables (if any) from a set of equations on the left-hand side of a reduced set of equations. If no variables are specified it is essentially equivalent to a call to solve. Answer are returned in a form suitable for use in other commands such as subs and eval.

• 

The original set of equations is formed by collecting the arguments to solvefor into a set of equations. The solve command is applied to the resulting system to produce 0 or more solutions.

• 

If no solution is found this is indicated by an empty list. If more than one solution is found then they are returned as a list of solutions.

• 

Each solution is returned as an equation, or (if more than one equation is involved) as a set of equations in which the variables on the left-hand side do not appear on the right hand side.

• 

Variables may be specified as an index to the procedure name, as in solvefor[x](...).  This indicates that the solutions must include the indicated variables on the left-hand side of the solution equations.

Examples

Important: The solvefor command has been deprecated.  Use the superseding command solve instead.

solveforx2+y2=1,x3y2x+xy=3

Warning, solvefor is deprecated. Please use solve command.

x=RootOf4_Z63_Z412_Z3+6_Z+9,index=1,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=15+RootOf4_Z63_Z412_Z3+6_Z+9,index=13+2RootOf4_Z63_Z412_Z3+6_Z+9,index=121,x=RootOf4_Z63_Z412_Z3+6_Z+9,index=2,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=25+RootOf4_Z63_Z412_Z3+6_Z+9,index=23+2RootOf4_Z63_Z412_Z3+6_Z+9,index=221,x=RootOf4_Z63_Z412_Z3+6_Z+9,index=3,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=35+RootOf4_Z63_Z412_Z3+6_Z+9,index=33+2RootOf4_Z63_Z412_Z3+6_Z+9,index=321,x=RootOf4_Z63_Z412_Z3+6_Z+9,index=4,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=45+RootOf4_Z63_Z412_Z3+6_Z+9,index=43+2RootOf4_Z63_Z412_Z3+6_Z+9,index=421,x=RootOf4_Z63_Z412_Z3+6_Z+9,index=5,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=55+RootOf4_Z63_Z412_Z3+6_Z+9,index=53+2RootOf4_Z63_Z412_Z3+6_Z+9,index=521,x=RootOf4_Z63_Z412_Z3+6_Z+9,index=6,y=43RootOf4_Z63_Z412_Z3+6_Z+9,index=65+RootOf4_Z63_Z412_Z3+6_Z+9,index=63+2RootOf4_Z63_Z412_Z3+6_Z+9,index=621

(1)

solvefor[t]x+y=1,xy+zt=3

Warning, solvefor is deprecated. Please use solve command.

t=2x2z,y=x+1

(2)

solvefor[y]x+y=1,xy+zt=3

Warning, solvefor is deprecated. Please use solve command.

x=12zt+2,y=12zt1

(3)

solvefor[z]x+y=1,xy+zt=3

Warning, solvefor is deprecated. Please use solve command.

y=x+1,z=2x2t

(4)

See Also

eliminate

resultant

solve

 


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