optimization - Mathematica FindMinimiumPlot not work for 2D case -

optimization - Mathematica FindMinimiumPlot not work for 2D case -

i new mathematica. using version 10.0.1.0. trying follow examples on unconstrainedoptimization.pdf.

i typed in next lines , got error message.

findminimumplot[cos[x^2 - 3 y] + sin[x^2 + y^2], {{x, 2}, {y, 1}}] findminimum::ivar: {{-0.3},{0.5}} not valid variable. >> findminimum[{{cos[0.9 + x^2] + sin[0.09 + x^2]}, {cos[1.5 - x^2] + sin[0.25 + x^2]}}, {x, 2}, {{{-0.3}, {0.5}}, ...........

anybody out there can tell me next?

re: introduction unconstrained optimization

it looks had y set {{-0.3}, {0.5}} before ran function.

clear[y]

or start in fresh session:

quit[]

then seek again.

<< optimization`unconstrainedproblems` findminimumplot[cos[x^2 - 3 y] + sin[x^2 + y^2], {{x, 1}, {y, 1}}]

optimization wolfram-mathematica