At what point of curve y=2/3x^3+1/2x^2, ...

At what point of curve `y=2/3x^3+1/2x^2,` the tangent makes equal angle with the axis? `(1/5,5/(24))a n d(-1,-1/6)` `(1/2,4/9)a n d(-1,0)` `(1/3,1/7)a n d(-3,1/2)` `(1/3,4/(47))a n d(-1,-1/3)`

`((1)/(2),(4)/(24))and (-1,-(1)/(6))`

`((1)/(2),(4)/(9))and(-1,0)`

`((1)/(3),(1)/(7))and(-3,(1)/(2))`

`((1)/(3),(4)/(47))and (-1,-(1)/(3))`

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