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Create a function called function Problem$6$ to plot Stream lines of a car.

The stream lines are described as:

$y1=(x^2+4{)}^{0\mathrm{.}6}$

$y2=(x^2+6{)}^{0\mathrm{.}6}$

Where domain $-4x4$ with an increment of $0\mathrm{.}1.$

Label the $x-,y-$ axes as $"x","$Y$".$ Add title and legend of the curves.