Question: Calculus Question: 49 : Can you determine at which value/values of x the function modelled by f(x) = 5x^4*(9^x) is the tangent horizontal? Calculus Question:

Calculus Question: 49 : Can you determine at which value/values of x the function modelled by f(x) = 5x^4*(9^x) is the tangent horizontal?

Calculus Question: 50: Calculate what is the slope of the tangent line to f(x) = sin(2x) / cos(4x) at (pi/2 or 90 degrees)?

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