Question 974087
Please help me solve this:

Find a number t such that the distance between 
(−3, 2)
 and 
(3t, 2t)
 is as small as possible
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{{{d = sqrt((-3 - 3t)^2 + (2 - 2t)^2)}}}
{{{d = sqrt(9 + 18t + 9t^2 + 4 - 8t + 4t^2)}}}
{{{d = sqrt(13t^2 + 10t + 13)}}}
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dd/dt = {{{(1/2)*(13t^2 + 10t + 13)^(-1/2)*(26t+10)}}}
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{{{(13t^2 + 10t + 13)^(-1/2)*(13t+5) = 0}}}
t = -5/13