What is the value of (x + y)2y if x = et sint and y = et cost? – McqOptions

MCQOPTIONS

1.	What is the value of (x + y)²y if x = e^t sint and y = e^t cost?
A.	x/2(y + y)
B.	x/2(y y)
C.	2(xy + y)
D.	2(xy y)
Answer» E.

Discussion

No Comment Found

Related MCQs

If, y = tan<sup>-1</sup>(x/a), then what is the value of y ?
If, y = (sin<sup>-1</sup>x)<sup>2</sup>, then what is the value of (1 x<sup>2</sup>)y xy + 4?
What is the value of (x + y)<sup>2</sup>y if x = e<sup>t</sup> sint and y = e<sup>t</sup> cost?
Given, y = tan<sup>-1</sup> (x<sup>2</sup> 1) then what is the value of (2x<sup>2</sup> 1)y + x(x<sup>2</sup> 1)y ?
What is the value of 4a cos3 (d<sup>2</sup>y/dx<sup>2</sup>) if x = a sin2 (1 + cos2 ) and y = a cos2 (1 cos2 )?
What will be the form of the equation after eliminating a and b from the equation y = a sin<sup>-1</sup>x + b cos<sup>-1</sup>x?
If, y = cos(2sin<sup>-1</sup>x), then what is the value of (1 x<sup>2</sup>)y xy + 4y?
What will be the domain of the function, if 3<sup>x</sup> + 3<sup>f(x)</sup> = minimum of (t), where (t) = minimum of (2t<sup>3</sup> 15t<sup>2</sup> + 36t 25, 2 + |sint|; 2 t 4} ?
Which of the following is correct for the nature of the roots x<sup>5</sup> a<sub>0</sub>x<sup>4</sup> + 3ax<sup>3</sup> + bx<sup>2</sup> + cx + d = 0 if it is given that 2a<sub>0</sub><sup>2</sup> < 15 and a<sub>0</sub>, a, b, c, d are real?
The function y = f(x) is represented parametrically by x = t<sup>5</sup> 5t<sup>3</sup> 20t + 7 and y = 4t<sup>3</sup> 3t<sup>2</sup> 18t + 3 (-2 < t < 2). At which point does y = f(x) has a minimum value?