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If you have a function f(x), then the tangent can be found by deriving f, denoted
d/dx(f(x)) = f'(x). This will give the slope of f(x) at a certain point (a,b).
find f'(a), call this m. Now, use the standard form for a line, y = mx+c, plug in the point (a,b) to solve for c. Finally, the equation for the line tangent to a point (a,b) and f(x) is y= f'(a)x + c
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a tangent is a line that touches the circle at only ONE point
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budosnp
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You need more than one tangent to find the equation of a parabola.
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Use the four-step process to find the slope of the tangent line to the graph of the given function at any point.
How do you find the slope of a tangent?
Take the derivative of the function.
How do you find the inverse tangent without a calculator?
You cannot.
