Let I = ∫ dx/[(x−1)^(11/13)(x+15)^(15/13)]. Then I Is
Solve the integral ∫dx/[(x−1)^(11/13)(x+15)^(15/13)] by substituting t=x−1, factoring out t² from the denominator, and a second substitution to reduce it to a power of a single variable.
Solve the integral ∫dx/[(x−1)^(11/13)(x+15)^(15/13)] by substituting t=x−1, factoring out t² from the denominator, and a second substitution to reduce it to a power of a single variable.
Given f(1)=1/3 and 3∫₁ˣf(t)dt=xf(x)−x³/3, find f(e) by differentiating both sides to get a linear differential equation and solving it with an integrating factor.
Find the maximum area of a rectangle inscribed in the ellipse x²/a²+y²/b²=1, using the parametric point (a cosθ, b sinθ) and maximising over θ.
Find the area of the region S={(x,y): x²+4x+2 ≤ y ≤ |x+2|} by substituting u=x+2 to reveal the region’s symmetry and simplify the intersection points.
Find dy/dx where y=a^(t+1/t) and x=(t+1/t)^a, by treating u=t+1/t as an intermediate variable so the parameter t’s own derivative cancels out.
Find where the tangents to y=(x−2)²−1 at its points of intersection with the line x−y=3 meet, by finding the two intersection points, their slopes, and solving the tangent-line system.