Question: 1. Using the First Derivative test, on (0,7) what interval is f(x) = cos x decreasing? . Write the equation of the line tangent

1. Using the First Derivative test, on (0,7) what interval is f(x) = cos x decreasing? . Write the equation of the line tangent to f(x) = x-3x+3 at its point of inflection.

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