optimization - Mathematica FindMinimiumPlot not work for 2D case -

I am new to mathematics, I am using version 10.0.1.0 I am trying to do that which is to follow the examples on UnconstrainedOptimization.pdf.

I typed in the following lines and got the error message. FindMinimum

  FindMinimumPlot Ivar: {{-0.3}, {0.5}} is not a valid variable & Gt; & Gt; 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}}, ...........  

Can anyone tell me what to do next?

Again

It looks like you have y is set {{- 0.3}, {0.5}} before running the function.

  clear [or]  

or start with a fresh session:

  Skip []  

Try again.

  & lt; & Lt; Optimization 'Incompatible' Problems: Search the new plot [cos [x ^ 2 - 3 y] + sin [x ^ 2 + y ^ 2], {{x, 1}, {y, 1}}]