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Consider the function Let where f(t) is differentiable for all t ∈ R. Show that z satisfies the partial differential equation (x2 − y2 ) ∂z/∂x + xy ∂z/∂y = xyz for all (x, y) ∈ R2 \ { (t, 0)|t ∈ R }.
ax az . Letſ be a differentiable function of one variable, and let w = f(p), where p = (x2 + y2 + 2)/2. Show that dw ay · Let z = f(x - y. y - x). Show that az/ax + az/ay=0. Let f be a differentiable function of three variables and sup- pose that w = Sex - y. y - 2.2 - x). Show that aw ду az Page 1 / 1 aw aw ax + +...
3. Let f : (a,b) +R be a function such that for all x, y € (a, b) and all t € (0.1) we have (tx + (1 - t)y)<tf(x) + (1 - t)f(y). Prove that f is continuous on (a,b).
b) i. Form partial differential equation from z = ax - 4y+b [4 marks] a +1 ii. Solve the partial differential equation 18xy2 + sin(2x - y) = 0 дх2ду c) i. Solve the Lagrange equation [4 Marks] az -zp + xzq = y2 where p az and q = ду [5 Marks] x ax ii. A special form of the second order partial differential equation of the function u of the two independent variables x and t is given...
Suppose f is a continuous and differentiable function on [0,1] and f(0)= f(1). Let a E (0, 1). Suppose Vr,y(0,1) IF f'(x) 0 and f'(y) ±0 THEN f'(x) af'(y) Show that there is exactly f(ax) and f'(x) 0 such that f(x) one Hint: Suppose f(x) is a continuous function on [0, 1] and f(0) x € (0, 1) such that f(x) = f(ax) f(1). Let a e (0,1), there exists an Suppose f is a continuous and differentiable function on...
f function 56. If f is homogeneous of degree n, show that af 2012 z + 2xy axay af buz = n(n -- 1)f(x, y) f(tx, ty) = t"f(x, y)
both a and b ,thanks 2. i)Suppose that f :R- R is differentiable and P(x,y) is defined bu Fa,y)-(2-3y). a) Show that F satisfies the partial differential equation 230 b) Given that F(r,0)sin(2x) for all z E R, find a formula for F(z,y).
derivative at p Bonus) It turns out that showing a function of multiple variables f(11, 12,...,In) is differentiable is somewhat difficult. In practice, it is often easier to show a stronger condition: if each partial af ax;' i = 1,..., n, is continuous in a disc around p = (as....,an), then is differentiable (21,...,0m). Put differently: if f is continuously differentiable at p, it is differentiable at p. However, just as in the one-variable case, there are functions that are...
where a=4 b=5 c=8 uestion 6 Let a,b,c be the last digits of your student ID. Find the symmetric equation of the line that passes through the point (a+b+c, a+b+c,a+b+c) and the point of intersection between the lines x= -a +at.y = -b+bt.z=(a+b+c+1) and x = a +as, y =b+bs.2= -s+a+b+c Attach File Browse My Computer Browse Content Collection
Let f(x)=(x? + 1)^(2x – 1) is a polynomial function of fifth degree. Its second derivative is f"(x) = 4(x2 + 1)(2x – 1)+8x²(2x – 1)+ 16x(x? + 1) and third derivative is f"(x) = 24x(2x – 1) +24(x + 1) +48x2. True False dy Given the equation x3 + 3 xy + y2 = 4. We find dx 2 x' + y by implicit differentiation and is to be y' = x + y2 True False Let f(x)= x...