Express cos9x+cos5x as a product.

Express cos9x+cos5x as a product.Can you just multiply the 9 and 5 to get: cos45x ? is that a product?
1. 1 answer
2. asked by Janique
3. 535 views
Hi, I need help differentiating this equationy=(cos5x) (e^-5x ) This is what I tried to do.... -5 (sin5x) (e^-5x) + 5 (e^-5x)
1. 1 answer
2. asked by SC
3. 466 views
Find the product of √30 and 6√10. Express it in standard form (i.e., a√b. Enter the product of the coefficients followed
1. 2 answers
2. asked by up
3. 2,863 views
Please help. i am confused on how to do this one. I keep getting arcsin(square root -cos9x) but it is wrong. The probem is F(x)=
1. 0 answers
2. asked by nic
3. 423 views
lim (4sin2x - 3x cos5x)/(3x/2 +(x^2)cscx )x->0
1. 1 answer
2. asked by mo
3. 569 views
1) lim 1-cos x / x^2x->0 2) use the mean value theorem to determine the value of c, given that f(x) = cos5x
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2. asked by Heal the World
3. 392 views
lim 1-cos x / x^2 x->0 use the mean value theorem to determine the value of c, given that f(x) = cos5x
1. 1 answer
2. asked by Beta plus
3. 444 views
Sin5x cos2x + cos5x sin2x=
1. 1 answer
2. asked by Becky
3. 2,244 views
1) Given that f(x,y)=xy/x^2+y^2, hence show that f(xy) = f(yx)2) use the mean value theorem to determine the value of c, given
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2. asked by Max 2
3. 283 views
1) Given that f(x,y)=xy/x^2+y^2, hence show that f(xy) = f(yx)2) use the mean value theorem to determine the value of c, given
1. 0 answers
2. asked by Beta plus
3. 421 views