Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.2: Introduction To Conics: parabolas
Problem 4ECP: Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.
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Please only solve using the given formulas as it'll help me better. Thank you.
![DEFINITIONS OF THE DERIVATIVE
f(x) – f(a)
f(x + h) – f(x).
f(a + h) – f(a)
S'(x) = lim
h-0
S'(a) = lim
S'(a) = lim
h-0
h
X - a
h
MULTIPLE DERIVATIVES
BASIC FUNCTION DERIVATIVES
A function fis n-times differentiable (or f E C") if you can apply
the derivative n times to f and have a continuous function after
cach application of the derivative.
Constant:
d
- [a] = 0, where a ER
dx
A function fis smooth (or f e C®) if it can be differentiated
infinitely many times, and each derivative is a continuous
function.
Power:
r] =r.x"-!, where r e R
dx
Exponential:
DERIVATIVE PROPERTIES
- b] = In(b) · b*, where b E (0,00)
Lincarity:
dx
Logarithmic:
F) + a · g(x)] =f'(x) + a • g'(x)
log,(x)] =
1
where b, x € (0,00)
Products:
dx
In(b) · x
Trigonometric:
[Scx)g(x)] = f°(x)g (x) + f(x)g°(x)
dx
: [sin(x)]
= cos(x)
Quotients:
dx
f'(x)g (x) – f(x)g'(x)
(8(2)°
d
d
[cos(x)] = – sin(x)
dx
dx g(x
[tan(x)] = sec²(x)
dx
where g (x) # 0
Compositions:
d
[sec(x)]
dx
= sec(x)tan(x)
(8(x)] =S" (8(x)) · g'(x)
d
[cot(x)] = – csc²cx)
dx
d
TANGENT AND NORMAL LINES
- [csc(x)] = - csc(x)cot(x)
dx
If y = f(x) describes some differentiable function, the equation of
the tangent line at a point x = a is given by
Inverse Trigonometric:
d
- (arcsin(x)] =
where x #±1
y = f'(x)(x – a) + f (a).
dx
The equation of the normal line at a point x = a is given by
d
- [arccos(x)] =
where x #±1
1
-(x - a) +f(a).
f'(a)
dx
y = -
d
[arctan(x)] :
1
dx
1+x2
LINEAR APPROXIMATION
Нурerbolic:
d
[sinh(x)] = cosh(x)
dx
If fis differentiable near x = a, then for values close to a,
f(x) z f'(a)(x – a) +f(a).
d
- [cosh(x)]
= sinh(x)
dx](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe24ff362-ce98-42b1-9f6c-651d78be6484%2Fcf263182-5430-45e3-9f42-232151a013b8%2Fu4yj4d9_processed.png&w=3840&q=75)
Transcribed Image Text:DEFINITIONS OF THE DERIVATIVE
f(x) – f(a)
f(x + h) – f(x).
f(a + h) – f(a)
S'(x) = lim
h-0
S'(a) = lim
S'(a) = lim
h-0
h
X - a
h
MULTIPLE DERIVATIVES
BASIC FUNCTION DERIVATIVES
A function fis n-times differentiable (or f E C") if you can apply
the derivative n times to f and have a continuous function after
cach application of the derivative.
Constant:
d
- [a] = 0, where a ER
dx
A function fis smooth (or f e C®) if it can be differentiated
infinitely many times, and each derivative is a continuous
function.
Power:
r] =r.x"-!, where r e R
dx
Exponential:
DERIVATIVE PROPERTIES
- b] = In(b) · b*, where b E (0,00)
Lincarity:
dx
Logarithmic:
F) + a · g(x)] =f'(x) + a • g'(x)
log,(x)] =
1
where b, x € (0,00)
Products:
dx
In(b) · x
Trigonometric:
[Scx)g(x)] = f°(x)g (x) + f(x)g°(x)
dx
: [sin(x)]
= cos(x)
Quotients:
dx
f'(x)g (x) – f(x)g'(x)
(8(2)°
d
d
[cos(x)] = – sin(x)
dx
dx g(x
[tan(x)] = sec²(x)
dx
where g (x) # 0
Compositions:
d
[sec(x)]
dx
= sec(x)tan(x)
(8(x)] =S" (8(x)) · g'(x)
d
[cot(x)] = – csc²cx)
dx
d
TANGENT AND NORMAL LINES
- [csc(x)] = - csc(x)cot(x)
dx
If y = f(x) describes some differentiable function, the equation of
the tangent line at a point x = a is given by
Inverse Trigonometric:
d
- (arcsin(x)] =
where x #±1
y = f'(x)(x – a) + f (a).
dx
The equation of the normal line at a point x = a is given by
d
- [arccos(x)] =
where x #±1
1
-(x - a) +f(a).
f'(a)
dx
y = -
d
[arctan(x)] :
1
dx
1+x2
LINEAR APPROXIMATION
Нурerbolic:
d
[sinh(x)] = cosh(x)
dx
If fis differentiable near x = a, then for values close to a,
f(x) z f'(a)(x – a) +f(a).
d
- [cosh(x)]
= sinh(x)
dx
Transcribed Image Text:6. Determine the equation of the lines tangent to the curve (there are two!)
x²y + 2xy? = x + 6y, when x = 2.
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