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Evaluate the integrals.$\int_{-\pi / 2}^{\pi / 2} \cos x \cos 7 x d x$

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Calculus 1 / AB

Calculus 2 / BC

Chapter 8

Techniques of Integration

Section 3

Trigonometric Integrals

Integration

Integration Techniques

Campbell University

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Lectures

01:11

In mathematics, integratio…

06:55

In grammar, determiners ar…

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$$\int_{-\pi / 2}^{\pi / 2…

01:02

Evaluate the following int…

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03:01

Evaluate the integrals.

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07:06

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00:53

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04:35

Use the Substitution Formu…

So we're a problem. 8.3 56. The intruder is from native priority to two priors to curse. Sign specs. Car sign. Cernak sticks. No, In this situation, pretty much the only thing it can do is to use the double angle. Now, the product off trick functions into somewhere different trick functions from. So, um, we have to co science courses. Next time scores are seven X. This is a call to co signer express. So next plus cursed sign. Oh, ex miner Cyrix here. So this is months we've done this. The West isthe really simple. So 1/2 comes out negative tires, too. Hi. Over too to the first term is cursed Sign of eight x Second term was co sign of negative 66 But Carson isn't even functions. So I would congest in place that with your sign of six sects D x now it can now we could find anti jury. There's immediate. So there would be negative one over 6 10 Um, excuse me, Not Nadir's. So their antidote, of course. Science sign. So it's native whenever 16 Because it comes out for from the chain rule sign of eight X plus one over 12 sign off six sects and evaluated at Dan Points. So so the answer would turn out to be, Let's see at pie over to we have from the term sign of eight X at both end points you have native for pie or for pie, at which point sign is zero. So this would be you're 16 times Cyril minus zero, and that's six x two we have. We'll get three pie and they're through pine, both of which are zero. Remember any hole multiple of pie? Give zero for a sign. So the answer to her now 20

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The number 2 is also the smallest & first prime number (since every other even number is divisible by two).

If you write pi (to the first two decimal places of 3.14) backwards, in big, block letters it actually reads "PIE".

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