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17 Cards in this Set
- Front
- Back
find the zeros
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set function = 0, factor or use quadratic equation if
quadratic, graph to find zeros on calculator |
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find equation of the line tangent to f(x) on [a,b]
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take derivative: f'(a) = m
use y - y1 = m(x - x1) |
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find equation of the line normal to f(x) on [a,b]
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same as above but take the negative reciprocal of the derivative at a (f'(a))
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show that f(x) is even
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show that f(-x) = f(x)
symmetric to y-axis |
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show that f(x) is odd
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show that f(x) = -f(x)
symmetric to origin |
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find the interval where f(x) is increasing
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find f'(x), set both numerator and denominator to
zero to find critical points, make sign chart of f'(x) and determine where it is positive |
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find interval where the slope of f(x) is increasing
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find the derivative of f'(x) = f"(x), set both
numerator and denominator to zero to find critical points, make sign chart of f"(x), and determine where it is positive |
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find the minimum value of a function
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make a sign chart of f'(x), find all relative minimums
and plug those values back into f(x) and choose the smallest |
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find the minimum slope of a function
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make a sign chart of the derivative of f'(x) = f"(x), find all relative minimums and plug those values back into f'(x) and choose the smallest
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find critical values
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express f'(x) as a fraction and set both numerator and denominator equal to zero
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find inflection points
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express f"(x) as a fraction and set both numerator and denominator equal to zero; make sign chart of f"(x) to find where f"(x) changes sign (+ to – or – to +)
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show that lim as x approaches a of f(x) exists
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show that the lim f(x) is the same from the left and right
lim as x approaches a- of f(x) = lim as x approaches a+ of f(x) |
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show that f(x) is continuous
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show the following:
1) that lim as x approaches a of f(x) exists 2) that f(a) exists 3) that the lim as x approaches a of f(x) = f(a) i.e. if you're given a function x^2+x+3, and you want to find the lim as x approaches 4 (just some a), then you plug in 4 in the function |
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find vertical asymptotes of f(x)
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do all factor/cancel of f(x) and set denominator = 0
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find horizontal asymptotes of f(x)
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find lim as x approaches infinity- of f(x) and lim as x approaches infinity+ of f(x)
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find the average rate of change of f(x) on [a,b]
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find (f(b) - f(a))/(b-a)
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find instantaneous rate of change of f(x) on a
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find f'(a)
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