Math Answers

Test the following series for convergence

Σ from n=1to ♾️ for [√n⁴+9 - √n⁴-9]

Test the following series for convergence.

Σ from n=1 to ♾️ for n.x^n-1 , x>0

Find the solution of partial differentail equation ,whether it is linear,non linear or quazi linear .Uxx+xUy=y

Suppose that f:[0,2]→ R is continuous on [0,2] and differentiable on [0,2] and

that f(0) =0 , f(1) =1, f(2) =1.

(i) Show that there exists c↓1∈ (0,1)such that f'(c↓1) =1

(ii) Show that there exists c↓2 ∈ (1,2)such that f'(c↓2) =0.

(iii) Show that there exists c ∈ (0,2)such that f'(c) =1/3

Find the integrating factor and solve the following equations:

( 𝑦 − 𝑥^2) 𝑑𝑥 +( 𝑥^2sin 𝑦 − 𝑥 )𝑑𝑦 = 0

Let f be a differentiable function on [α, β ] and x ∈[α, β ] .Show that, if

f ′(x) = 0 and , f ′′(x) >0 then f must have a local maximum at x.

Let f: [0, 1]→R be a function defined by f(x) = x^m (1-x)^n ,where . m, n∈N

Find the values of m and n such that the Rolle’s Theorem holds for the function

f .

Pio and Sons Inc. Spends P40, 000 to prepare a bid on a construction project. If the contract is awarded, the estimated revenue will be P300, 000. If the contract is not awarded, the company has a penalty of P50, 000. There is 40% chance that the company will be awarded the contract. Find the EV.

Determine the local minimum and local maximum values of the function f defined by

f(x) = 3-5x³ +5x⁴ -x^5

Prove that a strictly decreasing function is always one-one.