Use differentiation rules to determine the derivatives of each of the following, leaving the answer with positive exponent(s) and in surd form where applicable:
|Mathematics
Use differentiation rules to determine the derivatives of each of the following, leaving the answer with positive exponent(s) and in surd form where applicable:
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Answer
dxdy=2e2x+2x1+2xx3
Here are the derivatives for each function:
3.2.1
Given the function:
y=4e2x+21lnx−x3+sin30∘
Step 1: Rewrite terms with exponents for easier differentiation.
y=4e2x+21lnx−3x−21+sin30∘
Step 2: Differentiate each term using the appropriate rules (dxd(eax)=aeax, dxd(lnx)=x1, power rule, and derivative of a constant is 0).
dxdy=4(21e2x)+21(x1)−3(−21x−23)+0
Step 3: Simplify the expression and write with positive exponents and surd form.
dxdy=2e2x+2x1+23x−23dxdy=2e2x+2x1+2xx3
The final answer is:
dxdy=2e2x+2x1+2xx3
3.2.2
Given the function:
y=x26x4−3x2
Step 1: Simplify the function by dividing each term in the numerator by x2.
y=x26x4−x23x2y=6x2−3
Step 2: Differentiate the simplified function using the power rule.
dxdy=6(2x)−0dxdy=12x
The final answer is:
dxdy=12x
3.2.3
Given the function:
y=3x3sin(2x)
Step 1: Use the product rule dxd(uv)=u′v+uv′. Let u=3x3 and v=sin(2x).
Step 2: Find the derivatives of u and v.
u′=dxd(3x3)=9x2v′=dxd(sin(2x))=cos(2x)⋅dxd(2x)=2cos(2x)
Step 3: Apply the product rule.
dxdy=(9x2)(sin(2x))+(3x3)(2cos(2x))
Step 4: Simplify the expression.
dxdy=9x2sin(2x)+6x3cos(2x)
The final answer is:
dxdy=9x2sin(2x)+6x3cos(2x)
3.2.4
Given the function:
y=(2−x2)43
Step 1: Rewrite the function using a negative exponent.
y=3(2−x2)−4
Step 2: Use the chain rule dxd(f(g(x)))=f′(g(x))⋅g′(x). Let f(u)=3u−4 and u=2−x2.
f′(u)=3(−4)u−5=−12u−5g′(x)=dxd(2−x2)=−2x
Step 3: Apply the chain rule.
dxdy=(−12(2−x2)−5)(−2x)
Step 4: Simplify the expression and write with positive exponents.
dxdy=24x(2−x2)−5dxdy=(2−x2)524x
The final answer is:
dxdy=(2−x2)524x
3.2.5
Given the function:
y=ln(cos3x)
Step 1: Use the chain rule for logarithmic functions dxd(ln(f(x)))=f(x)f′(x). Here f(x)=cos3x.
Step 2: Find the derivative of f(x).
f′(x)=dxd(cos3x)=−sin(3x)⋅dxd(3x)=−3sin(3x)
Step 3: Apply the chain rule.
dxdy=cos(3x)−3sin(3x)
Step 4: Simplify using the identity tanθ=cosθsinθ.
dxdy=−3tan(3x)
The final answer is:
dxdy=−3tan(3x)
3.2.6
Given the function:
y=−3e5x+5x−22−2x5+2πx
Step 1: Rewrite terms with exponents for easier differentiation.
y=−3e5x+52x2−21x25+2πx
Step 2: Differentiate each term using the appropriate rules (dxd(eax)=aeax and power rule).
dxdy=−3(5e5x)+52(2x)−21(25x23)+2π(1)
Step 3: Simplify the expression and write with positive exponents and surd form.
dxdy=−15e5x+54x−45x23+2πdxdy=−15e5x+54x−45xx+2π
The final answer is:
dxdy=−15e5x+54x−45xx+2π
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3.2.1 Given the function: y = 4e^(x)/(2) + (1)/(2) x - (3)/(sqrt(x)) + 30^ Step 1: Rewrite terms with exponents for easier differentiation.
Use differentiation rules to determine the derivatives of each of the following, leaving the answer with positive exponent(s) and in surd form where applicable:
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
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Here are the derivatives for each function: 3.2.1 Given the function: y = 4e^(x)/(2) + (1)/(2) x - (3)/(sqrt(x)) + 30^ Step 1: Rewrite terms with exponents for easier differentiation. y = 4e^(x)/(2) + (1)/(2) x - 3x^-(1)/(2) + 30^ Step 2: Differentiate each term using the appropriate rules ((d)/(dx)(e^ax) = ae^ax, (d)/(dx)( x) = (1)/(x), power rule, and derivative of a constant is 0). (dy)/(dx) = 4 ((1)/(2)e^(x)/(2)) + (1)/(2)((1)/(x)) - 3(-(1)/(2)x^-(3)/(2)) + 0 Step 3: Simplify the expression and write with positive exponents and surd form. (dy)/(dx) = 2e^(x)/(2) + (1)/(2x) + (3)/(2)x^-(3)/(2) (dy)/(dx) = 2e^(x)/(2) + (1)/(2x) + (3)/(2xsqrt(x)) The final answer is: (dy)/(dx) = 2e^(x)/(2) + (1)/(2x) + (3)/(2xsqrt(x)) 3.2.2 Given the function: y = (6x^4 - 3x^2)/(x^2) Step 1: Simplify the function by dividing each term in the numerator by x^2. y = (6x^4)/(x^2) - (3x^2)/(x^2) y = 6x^2 - 3 Step 2: Differentiate the simplified function using the power rule. (dy)/(dx) = 6(2x) - 0 (dy)/(dx) = 12x The final answer is: (dy)/(dx) = 12x 3.2.3 Given the function: y = 3x^3 (2x) Step 1: Use the product rule (d)/(dx)(uv) = u'v + uv'. Let u = 3x^3 and v = (2x). Step 2: Find the derivatives of u and v. u' = (d)/(dx)(3x^3) = 9x^2 v' = (d)/(dx)((2x)) = (2x) · (d)/(dx)(2x) = 2(2x) Step 3: Apply the product rule. (dy)/(dx) = (9x^2)((2x)) + (3x^3)(2(2x)) Step 4: Simplify the expression. (dy)/(dx) = 9x^2(2x) + 6x^3(2x) The final answer is: (dy)/(dx) = 9x^2(2x) + 6x^3(2x) 3.2.4 Given the function: y = (3)/((2-x^2)^4) Step 1: Rewrite the function using a negative exponent. y = 3(2-x^2)^-4 Step 2: Use the chain rule (d)/(dx)(f(g(x))) = f'(g(x)) · g'(x). Let f(u) = 3u^-4 and u = 2-x^2. f'(u) = 3(-4)u^-5 = -12u^-5 g'(x) = (d)/(dx)(2-x^2) = -2x Step 3: Apply the chain rule. (dy)/(dx) = (-12(2-x^2)^-5)(-2x) Step 4: Simplify the expression and write with positive exponents. (dy)/(dx) = 24x(2-x^2)^-5 (dy)/(dx) = (24x)/((2-x^2)^5) The final answer is: (dy)/(dx) = (24x)/((2-x^2)^5) 3.2.5 Given the function: y = ( 3x) Step 1: Use the chain rule for logarithmic functions (d)/(dx)((f(x))) = (f'(x))/(f(x)). Here f(x) = 3x. Step 2: Find the derivative of f(x). f'(x) = (d)/(dx)( 3x) = -(3x) · (d)/(dx)(3x) = -3(3x) Step 3: Apply the chain rule. (dy)/(dx) = (-3(3x))/((3x)) Step 4: Simplify using the identity = ( )/( ). (dy)/(dx) = -3(3x) The final answer is: (dy)/(dx) = -3(3x) 3.2.6 Given the function: y = -3e^5x + (2)/(5x^-2) - sqrt(x^5)2 + ( x)/(2) Step 1: Rewrite terms with exponents for easier differentiation. y = -3e^5x + (2)/(5)x^2 - (1)/(2)x^(5)/(2) + ()/(2)x Step 2: Differentiate each term using the appropriate rules ((d)/(dx)(e^ax) = ae^ax and power rule). (dy)/(dx) = -3(5e^5x) + (2)/(5)(2x) - (1)/(2)((5)/(2)x^(3)/(2)) + ()/(2)(1) Step 3: Simplify the expression and write with positive exponents and surd form. (dy)/(dx) = -15e^5x + (4)/(5)x - (5)/(4)x^(3)/(2) + ()/(2) (dy)/(dx) = -15e^5x + (4)/(5)x - (5)/(4)xsqrt(x) + ()/(2) The final answer is: (dy)/(dx) = -15e^5x + (4)/(5)x - (5)/(4)xsqrt(x) + ()/(2) Send me the next one 📸