Q. 16. Find the equation of the curve for which y′′=x34 and which is tangent to the line 2x+y=5 at the point (1,3)
Integrate second derivative: : Integrate the second derivative to find the first derivative.We are given y′′=x34. To find the first derivative y′, we integrate y′′ with respect to x.y′=∫y′′dx=∫x34dx=−x22+C1
Determine constant using tangent: : Determine the constant C1 using the tangent condition.The curve is tangent to the line 2x+y=5 at the point (1,3). The slope of the tangent line at this point is the derivative of y with respect to x at x=1.The slope of the line 2x+y=5 is −2 (since y=−2x+5).So, y′(1)=−2.Substitute x=1 into 2x+y=51 to find C1.−2=−122+C1C1=−2+2=0
Integrate first derivative: : Integrate the first derivative to find the original function y.Now that we know C1=0, we have y′=−x22. To find y, we integrate y′ with respect to x.y=∫y′dx=∫−x22dx=x2+C2
Determine constant using point: : Determine the constant C2 using the point (1,3).The curve passes through the point (1,3). Substitute x=1 and y=3 into y=x2+C2 to find C2.3=12+C2C2=3−2=1
Write final equation: : Write the final equation of the curve.Now that we have both constants C1 and C2, we can write the final equation of the curve.y=x2+1
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