Q. Which of the following is equivalent to log(6)logc(6) ?Choose 1 answer:(A) log(c)(B) logc(1)(C) log(c)1(D) log(6)1
Differentiate with respect to x: Differentiate both sides of the equation with respect to x using implicit differentiation.To differentiate tan(x+y), we use the chain rule and the fact that the derivative of tan(u) with respect to u is sec2(u). For sec(x−y), we also use the chain rule and the fact that the derivative of sec(u) with respect to u is sec(u)tan(u). We must also remember to apply the derivative to the inside function (x0 or x1) which will give us an additional factor of x2 for each term since the derivative of x with respect to x is x2 and the derivative of x6 with respect to x is x8 (x9 since x6 is a function of x).Differentiating tan(x+y) gives tan(x+y)3 because of the chain rule. Differentiating sec(x−y) gives tan(x+y)5. The right side of the equation is a constant, so its derivative is tan(x+y)6.So we have:tan(x+y)7
Solve for dxdy: Solve for dxdy. We can rearrange the terms to isolate dxdy: sec2(x+y)⋅dxdy−sec(x−y)tan(x−y)⋅dxdy=−sec2(x+y) Combining like terms gives us: dxdy⋅(sec2(x+y)−sec(x−y)tan(x−y))=−sec2(x+y) Now we can solve for dxdy: dxdy=(sec2(x+y)−sec(x−y)tan(x−y))−sec2(x+y)
Evaluate at (π/8,π/8): Evaluate dxdy at the given point (π/8),(π/8). We need to plug in x=π/8 and y=π/8 into our expression for dxdy: dxdy=−sec2((π/8)+(π/8))/(sec2((π/8)+(π/8))−sec((π/8)−(π/8))tan((π/8)−(π/8))) Since (π/8)−(π/8)=0, sec(0)=1 and tan(0)=0, the expression simplifies to: dxdy0
Calculate slope of tangent line: Calculate the slope of the tangent line.We know that sec(4π)=2, so we can substitute this into our expression:dxdy=−(2−1)2dxdy=−2This is the slope of the tangent line at the point (8π,8π).
Write tangent line equation: Write the equation of the tangent line.The equation of a line is y−y1=m(x−x1), where m is the slope and (x1,y1) is a point on the line. We have m=−2 and our point is (8π,8π), so the equation of the tangent line is:y−(8π)=−2(x−(8π))
Simplify tangent line equation: Simplify the equation of the tangent line.We can distribute the −2 and move 8π to the other side to get the final equation:y=−2x+4π+8πy=−2x+83πThis is the equation of the tangent line at the given point.
More problems from Find indefinite integrals using the power rule (Level 2)