use chain rule and

to show

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what i know is, if i had to find then i would go about:

plugging values gives

similarly can find [/tex] u_\theta , v_r and v_theta[/tex]

but to find , how would i set up the chain rule to begin with? In above case, x and y are function of r and theta so it makes sense. ho.wever, here i can't do similar with u_x...i think.

please show full work if possible.