A sequence {an} is given by: an = n2 - 1, n € N.
Show that it is not an arithmetic progression (A.P)?
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The third term of an arithmetic progression is 25 and the tenth term is -3. Find the first term and the common difference?
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Write the point-slope form of the line's equation satisfying the given conditions. Then use the point-slope form of the equation to write the slope-intercept form of the equation.
Slope =3, passing through (6 ,2)
What is the point-slope form of the equation of the line?
__?
(Simplify your answer. Use integers or fractions for any numbers in the equation.)
What is the slope-intercept form of the equation of the line?
__?
(Simplify your answer. Use integers or fractions for any numbers in the equation.)
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The integral ∫sec2x/(sec x + tan x)9/2 dx equals (for some arbitrary constant k)
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5.
Which value of x, with −4 ≤ x ≤ 4, corresponds to the global (absolute) maximum of the functions f(x) = x 2 (3x 2 − 4x − 36) + c, where c is some given real number?
(a) −2 (b) 2 (c) 3 (d) 0 (e) None of the above.
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14. Find f(x) by solving the initial value problem. f 0 (x) = e x − 2x; f (0) = 2
(a) f (x) = e x − x 2 (b) f (x) = e x − x 2 + 1 (c) f (x) = e x − x 2 + 2 (d) f (x) = e x − x 2 + C (e) None of the above.
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18. Let f(x, y) = 1 + x + y + x 2 + axy + y 2 be a function of two variables. Suppose it is always true that ∂f /∂x = ∂f /∂y . What is the value of a?
(a) Any value of a is possible since mixed partial derivatives are equal. (b) 0 (c) 2 (d) 1 (e) There is no such value of a since the partial derivatives must be different.
Please provide the correct solution for each problem for a thumbs up. thank you!
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Fundamental Theorem of Line Integrals Consider the line integral: ∮_C▒〈6xy+6x, 3x^2-3 cos(y) 〉 ∙dr ⃗ where C is the line segment from the origin to (4, 5). Evaluate this integral by rewriting the integral as a standard single variable integral of the parameter t. Without finding a potential function show that the integrand is a gradient field. Find a potential function for the vector field. Use the Fundamental Theorem of Line Integrals to evaluate this integral.
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Two chemical factories are discharging toxic waste into a large lake, and the pollution level at a point ? miles from factory A toward factory B is ?(?) = 3?2 − 72? + 576 parts per million for 0 ≤ ? ≤ 50. Find where the pollution is the least
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Solve the following constant coefficient linear differential equations using Laplace Transform (LT), Partial Fraction Expansion (PFE), and Inverse Laplace Transform (ILT). You must check answers in the t-domain using the initial conditions.
Note: Complex conjugate roots
y ̈ (t) + 6 ̇y (t) + 13y (t) = 2
use the initial conditions
y(0) = 3, ̇y(0) = 2.
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If a, b, c are in A.P. and P is the A.M. between a and b, and q is the A.M. between b and c, show that b is the A.M. between p and q.
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Total number of six-digit numbers in which only and all the five digits 1, 3, 5, 7, and 9 appear, is
(a) 56
(b) (½)(6!)
(c) 6!
(d) (5/2) 6!
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) Let S be the surface (with outward orientation) given by the boundary of the solid hemisphere x 2 + y 2 + z 2 ≤ 4 with z ≥ 0 (i.e., including the disk x 2 + y 2 ≤ 4). Use the Divergence Theorem to compute the flux of the vector field F = xyj + 2yzk over the surface S.
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The Cartesian coordinates of a point are given.
(a) (2, −5)
(i) Find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π. (r, θ) =
(ii) Find polar coordinates (r, θ) of the point, where r < 0 and 0 ≤ θ < 2π. (r, θ) =
(b) (-2, −2)
(i) Find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π. (r, θ) =
(ii) Find polar coordinates (r, θ) of the point, where r < 0 and 0 ≤ θ < 2π. (r, θ) =
(c) (3, 3sqrt3)
(i) Find polar coordinates (r, θ) of the point, where r > 0 and 0 ≤ θ < 2π. (r, θ) =)
(ii) Find polar coordinates (r, θ) of the point, where r < 0 and 0 ≤ θ < 2π. (r, θ) =
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A spring has a natural length of 50cm. If a 60N force is required to keep the spring compressed 20cm, how much work is done during this compression? How much work is required to compress the spring to a length of 25cm?
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