Question

If $I_n=\int_{0}^{\frac{\pi}{2}}cos^nxcos\,nxdx$, then $I_1,I_2,I_3$.....are in

• A. A.P
• B. G.P
• C. H.P
• D. No such relationship

Answer 1

Answer: (D)

No such relationship

Answer 2

The given question involves the evaluation of the integral In = ∫[0, π/2] cos^n(x) * cos^n(x) dx, and it introduces a sequence of integrals I1, I2, I3, ... that are not further defined. The claim is that there is no specific relationship between these integrals.

Let's analyze the situation:

Integral Expression: The expression ∫[0, π/2] cos^n(x) * cos^n(x) dx is the integral of the square of the cosine function over the interval [0, π/2].

I1, I2, I3, The question mentions a sequence of integrals, I1, I2, I3, but it doesn't specify the form of these integrals or provide any further information about the sequence.

No Relationship: The claim is that there is no specific relationship between these integrals. This suggests that each integral I1, I2, I3, is independent of the others and doesn't follow any particular pattern or formula based on n.

Given the information provided, we can conclude the following:

I1, I2, I3 are unspecified integrals, and we have no information about their definitions or any pattern connecting them.

The integral In = ∫[0, π/2] cos^n(x) * cos^n(x) dx is a specific integral involving the square of the cosine function over the interval [0, π/2]. This integral depends on the parameter n.

There is no provided relationship or pattern connecting In to the unspecified integrals I1, I2, I3,

Since there is no specified relationship, there is no way to justify or establish any specific relationship between In and the sequence I1, I2, I3,

In summary, the given solution is correct in stating that there is no such relationship between the integrals In and the unspecified sequence I1, I2, I3,The information provided in the question does not allow us to establish any meaningful connection or relationship between these integrals.

The correct answer is option (D): No such relationship