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# Let $f(x) = cx + \ln(\cos x).$ For what value of $c$ is $f'(\pi/4) = 6?$

## c=7

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in this trouble Work your function. Perplexed as C Times Loss Nation local co sign effects were seized on Ellison also were given that Derek of Dysfunction. It'll wait for next sequel to 546 and we're trying to find value of Seaside Shack. This your question will hold. All right, so let's first find it every two at a time. Affects given. That will be C plus one overcome sign of X times. A virtual co sign X, which is negative sign. That's, Oh, that is a C minus. Tensions off. Yes. Now, unless you let there with direct given points over the next five, before we have C minus. Tension by before be known attention point reporters he performed. So there is a C minus one. And we know, in addition, people six so harmless, very easily See that see should be able to seven

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