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55xdx\int 5\sqrt{5x}\,dx

Full solution

Q. 55xdx\int 5\sqrt{5x}\,dx
  1. Rewrite square root as power: We are given the integral to solve: 55xdx\int 5\sqrt{5x}\,dx. To solve this, we will first rewrite the square root as a power of 1/21/2.\newline5(5x)1/2dx\int 5(5x)^{1/2}\,dx
  2. Pull constant outside integral: Now, we can pull the constant 55 outside the integral to simplify the expression.5(5x)12dx5\int (5x)^{\frac{1}{2}}\,dx
  3. Apply power rule for integration: Next, we apply the power rule for integration, which states that xndx=x(n+1)(n+1)+C\int x^n \, dx = \frac{x^{(n+1)}}{(n+1)} + C, where n1n \neq -1. In our case, n=12n = \frac{1}{2}.5×[(5x)(12+1)]/(12+1)+C5 \times \left[\left(5x\right)^{\left(\frac{1}{2} + 1\right)}\right] / \left(\frac{1}{2} + 1\right) + C
  4. Simplify exponent and denominator: We simplify the exponent and the denominator. 5×(5x)32/(32)+C5 \times (5x)^{\frac{3}{2}} / \left(\frac{3}{2}\right) + C
  5. Divide by reciprocal: To divide by 32\frac{3}{2}, we multiply by its reciprocal, which is 23\frac{2}{3}.(5×23)×(5x)32+C\left(5 \times \frac{2}{3}\right) \times \left(5x\right)^{\frac{3}{2}} + C
  6. Multiply constants outside integral: Now, we multiply the constants outside the integral. (103)×(5x)32+C(\frac{10}{3}) \times (5x)^{\frac{3}{2}} + C
  7. Rewrite expression in simplified form: Finally, we can rewrite the expression in a more simplified form. (103)×5(32)×x(32)+C(\frac{10}{3}) \times 5^{(\frac{3}{2})} \times x^{(\frac{3}{2})} + C
  8. Simplify square root term: Since 5325^{\frac{3}{2}} is the square root of 55 cubed, we can simplify it to 555\sqrt{5}. \newline(103)55x32+C(\frac{10}{3}) \cdot 5\sqrt{5} \cdot x^{\frac{3}{2}} + C