Describe the graph of the polar equation. 5r cos 0 + r sin 0 = 7 Line with slope 7 and y-intercept (0,5) Parabola with vertex (5, 7) opening upward Line with slope -5 and y-intercept (0,7) Vertical line passing through (5, 0)

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A: f(x)=e1-cos xf'(x)=e1-cos x ddx(1-cos x)f'(x)==e1-cos x (sin x)f'(x)=0e1-cos x (sin x)=0e1-cos x ≠0…

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Q: 11. ydx + x(x²y = 1)dy = 0 -

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Q: Find the limit, if it exists. lim (---)

A: Given that a limit problem and we solve this problem by using general property of limit.   Here i…