Finding a curve from its gradient and a point
Difficulty: ★★☆A curve has gradient function \(\dfrac{dy}{dx}=3x^2-6x+2\) and passes through the point \((-2,-10)\).
Which equation could be the curve?
Finding an equation from a squared gradient function
Difficulty: ★★☆A curve has gradient function \(\dfrac{dy}{dx}=(1-2x)^2\) and passes through the point \((1,8)\).
Which equation is correct?
Finding a curve from a product gradient
Difficulty: ★★★A curve has gradient function \(\dfrac{dy}{dx}=x(2x+5)\) and passes through the point \((5,-1)\).
Which equation is correct?
Finding a curve involving roots
Difficulty: ★★★A curve has gradient function \(\dfrac{dy}{dx}=\sqrt{x}(\sqrt{x}-3)\) and passes through the point \((9,12)\).
Which equation is correct?
Finding a curve from a simplified quotient gradient
Difficulty: ★★☆A curve has gradient function \(\dfrac{dy}{dx}=\dfrac{9x^3-3x}{x}\) and passes through the point \((-5,4)\).
Which equation is correct?
Finding a curve from a product of brackets
Difficulty: ★★★A curve has gradient function \(\dfrac{dy}{dx}=(3x-1)(5x+2)\) and passes through the point \((-4,-6)\).
Which equation is correct?
Finding a curve from a gradient with fractional powers
Difficulty: ★★★A curve has gradient function \(\dfrac{dy}{dx}=\dfrac{5}{\sqrt{x}}-10\sqrt{x^3}\) and passes through the point \((1,-6)\).
Which equation is correct?
Finding a curve from its gradient function and a point
Difficulty: ★★★A curve passes through the point \((7,10)\) and its gradient function is \(\dfrac{6}{x^3}+2\).
Which equation is correct?
Finding an equation from f prime and a point
Difficulty: ★★★The curve \(C\) has equation \(y=f(x)\). It passes through the point \((-2,-1)\) and \(f\,\!'(x)=x(3-x)\).
Which equation is correct?
Finding a curve from a second derivative
Difficulty: ★★★A curve is such that \(\dfrac{d^2y}{dx^2}=-8x\). The curve has a maximum point when \(x=1\), and the point \((2,-1)\) lies on the curve.
Which equation is correct?
Finding f of x from its derivative and a function value
Difficulty: ★★★Given that \(f\,\!'(x)=8x^3-4+3x^{-1/2}\) and \(f(4)=3\), which expression is correct for \(f(x)\)?
Finding y from a second derivative and initial conditions
Difficulty: ★★★Given that \(\dfrac{d^2y}{dx^2}=-3x+2\), and when \(x=-1\), \(\dfrac{dy}{dx}=5\) and \(y=0\), which equation is correct?
Finding the equation of a curve from its gradient
Difficulty: ★★☆A curve passes through the point \((3,10)\) and its gradient at any point is given by \(\dfrac{dy}{dx}=6x^2-4x+3\).
Which equation is correct?